Snort configuration error

I followed the installation guide in the wiki, and jumped to auto configuration as instructed running under OpenWRT 24.10.1 on RPI5. My home network is connected via br-lan (eth1 usb) through an OpenVPN tunnel tun0 and then to the wan interface eth0.

Snort did not detect pings from the router in the testing rules, but detected pings between networked devices. I therefore went on to download rules with a free oinkcode.

But after this snort-mgr check --verbose spews out a lot of errors. What am I doing wrong:

snort-mgr check --verbose
--------------------------------------------------
o")~   Snort++ 3.1.84.0
--------------------------------------------------
Loading /mnt/sda2/snort.d/test_conf.lua:
Loading /etc/snort/snort.lua:
Loading snort_defaults.lua:
Finished snort_defaults.lua:
Finished /etc/snort/snort.lua:
        snort
        ssh
        host_cache
        pop
        so_proxy
        stream_tcp
        mms
        smtp
        gtp_inspect
        packets
        dce_http_proxy
        alert_json
        cip
        ips
        stream_icmp
        hosts
        normalizer
        binder
        wizard
        appid
WARNING: /mnt/sda2/snort.d/test_conf.lua: appid: app_detector_dir not configured; no support for appids in rules.

        js_norm
        file_id
        http2_inspect
        http_inspect
        stream_udp
        ftp_data
        ftp_server
        search_engine
        port_scan
        dce_http_server
        dce_tcp
        dce_smb
        iec104
        telnet
        ssl
        sip
        rpc_decode
        netflow
        modbus
        host_tracker
        stream_user
        stream_ip
        trace
        back_orifice
        classifications
        dnp3
        active
        process
        ftp_client
        daq
        decode
        alerts
        stream
        references
        arp_spoof
        output
        network
        dns
        dce_udp
        imap
        file_policy
        s7commplus
        stream_file
Finished /mnt/sda2/snort.d/test_conf.lua:
Loading file_id.rules_file:
Loading file_magic.rules:
WARNING: file_magic.rules:1 4:1:1 has no service with file_data
WARNING: file_magic.rules:2 4:2:1 has no service with file_data
WARNING: file_magic.rules:3 4:3:1 has no service with file_data
WARNING: file_magic.rules:4 4:4:1 has no service with file_data
WARNING: file_magic.rules:5 4:5:1 has no service with file_data
WARNING: file_magic.rules:6 4:6:1 has no service with file_data
WARNING: file_magic.rules:7 4:7:1 has no service with file_data
WARNING: file_magic.rules:8 4:8:1 has no service with file_data
WARNING: file_magic.rules:9 4:9:1 has no service with file_data
WARNING: file_magic.rules:10 4:10:1 has no service with file_data
WARNING: file_magic.rules:11 4:11:1 has no service with file_data
WARNING: file_magic.rules:12 4:12:1 has no service with file_data
WARNING: file_magic.rules:13 4:13:1 has no service with file_data
WARNING: file_magic.rules:14 4:14:1 has no service with file_data
WARNING: file_magic.rules:15 4:15:1 has no service with file_data
WARNING: file_magic.rules:16 4:16:1 has no service with file_data
WARNING: file_magic.rules:17 4:17:1 has no service with file_data
WARNING: file_magic.rules:18 4:18:1 has no service with file_data
WARNING: file_magic.rules:19 4:19:1 has no service with file_data
WARNING: file_magic.rules:20 4:20:1 has no service with file_data
WARNING: file_magic.rules:21 4:21:1 has no service with file_data
WARNING: file_magic.rules:22 4:22:1 has no service with file_data
WARNING: file_magic.rules:23 4:23:1 has no service with file_data
WARNING: file_magic.rules:24 4:24:1 has no service with file_data
WARNING: file_magic.rules:25 4:25:1 has no service with file_data
WARNING: file_magic.rules:26 4:26:1 has no service with file_data
WARNING: file_magic.rules:27 4:27:1 has no service with file_data
WARNING: file_magic.rules:28 4:28:1 has no service with file_data
WARNING: file_magic.rules:29 4:29:1 has no service with file_data
WARNING: file_magic.rules:30 4:30:1 has no service with file_data
WARNING: file_magic.rules:31 4:31:1 has no service with file_data
WARNING: file_magic.rules:32 4:32:1 has no service with file_data
WARNING: file_magic.rules:33 4:33:1 has no service with file_data
WARNING: file_magic.rules:34 4:34:1 has no service with file_data
WARNING: file_magic.rules:35 4:35:1 has no service with file_data
WARNING: file_magic.rules:36 4:36:1 has no service with file_data
WARNING: file_magic.rules:37 4:37:1 has no service with file_data
WARNING: file_magic.rules:38 4:38:1 has no service with file_data
WARNING: file_magic.rules:39 4:39:1 has no service with file_data
WARNING: file_magic.rules:40 4:40:1 has no service with file_data
WARNING: file_magic.rules:41 4:41:1 has no service with file_data
WARNING: file_magic.rules:42 4:42:1 has no service with file_data
WARNING: file_magic.rules:43 4:43:1 has no service with file_data
WARNING: file_magic.rules:44 4:44:1 has no service with file_data
WARNING: file_magic.rules:45 4:45:1 has no service with file_data
WARNING: file_magic.rules:46 4:46:1 has no service with file_data
WARNING: file_magic.rules:47 4:47:1 has no service with file_data
WARNING: file_magic.rules:48 4:48:1 has no service with file_data
WARNING: file_magic.rules:49 4:49:1 has no service with file_data
WARNING: file_magic.rules:50 4:50:1 has no service with file_data
WARNING: file_magic.rules:51 4:51:1 has no service with file_data
WARNING: file_magic.rules:52 4:52:1 has no service with file_data
WARNING: file_magic.rules:53 4:53:1 has no service with file_data
WARNING: file_magic.rules:54 4:54:1 has no service with file_data
WARNING: file_magic.rules:55 4:55:1 has no service with file_data
WARNING: file_magic.rules:56 4:56:1 has no service with file_data
WARNING: file_magic.rules:57 4:57:1 has no service with file_data
WARNING: file_magic.rules:58 4:58:1 has no service with file_data
WARNING: file_magic.rules:59 4:59:1 has no service with file_data
WARNING: file_magic.rules:60 4:60:1 has no service with file_data
WARNING: file_magic.rules:61 4:61:1 has no service with file_data
WARNING: file_magic.rules:62 4:62:1 has no service with file_data
WARNING: file_magic.rules:63 4:63:1 has no service with file_data
WARNING: file_magic.rules:64 4:64:1 has no service with file_data
WARNING: file_magic.rules:65 4:65:1 has no service with file_data
WARNING: file_magic.rules:66 4:66:1 has no service with file_data
WARNING: file_magic.rules:67 4:67:1 has no service with file_data
WARNING: file_magic.rules:68 4:68:1 has no service with file_data
WARNING: file_magic.rules:69 4:69:1 has no service with file_data
WARNING: file_magic.rules:70 4:70:1 has no service with file_data
WARNING: file_magic.rules:71 4:71:1 has no service with file_data
WARNING: file_magic.rules:72 4:72:1 has no service with file_data
WARNING: file_magic.rules:73 4:73:1 has no service with file_data
WARNING: file_magic.rules:74 4:74:1 has no service with file_data
WARNING: file_magic.rules:75 4:75:1 has no service with file_data
WARNING: file_magic.rules:76 4:76:1 has no service with file_data
WARNING: file_magic.rules:77 4:77:1 has no service with file_data
WARNING: file_magic.rules:78 4:78:1 has no service with file_data
WARNING: file_magic.rules:79 4:79:1 has no service with file_data
WARNING: file_magic.rules:80 4:80:1 has no service with file_data
WARNING: file_magic.rules:81 4:81:1 has no service with file_data
WARNING: file_magic.rules:82 4:82:1 has no service with file_data
WARNING: file_magic.rules:83 4:83:1 has no service with file_data
WARNING: file_magic.rules:84 4:84:1 has no service with file_data
WARNING: file_magic.rules:85 4:85:1 has no service with file_data
WARNING: file_magic.rules:86 4:86:1 has no service with file_data
WARNING: file_magic.rules:87 4:87:1 has no service with file_data
WARNING: file_magic.rules:88 4:88:1 has no service with file_data
WARNING: file_magic.rules:89 4:89:1 has no service with file_data
WARNING: file_magic.rules:90 4:90:1 has no service with file_data
WARNING: file_magic.rules:91 4:91:1 has no service with file_data
WARNING: file_magic.rules:92 4:92:1 has no service with file_data
WARNING: file_magic.rules:93 4:93:1 has no service with file_data
WARNING: file_magic.rules:94 4:94:1 has no service with file_data
WARNING: file_magic.rules:95 4:95:1 has no service with file_data
WARNING: file_magic.rules:96 4:96:1 has no service with file_data
WARNING: file_magic.rules:97 4:97:1 has no service with file_data
WARNING: file_magic.rules:98 4:98:1 has no service with file_data
WARNING: file_magic.rules:99 4:99:1 has no service with file_data
WARNING: file_magic.rules:100 4:100:1 has no service with file_data
WARNING: file_magic.rules:101 4:101:1 has no service with file_data
WARNING: file_magic.rules:102 4:102:1 has no service with file_data
WARNING: file_magic.rules:103 4:103:1 has no service with file_data
WARNING: file_magic.rules:104 4:104:1 has no service with file_data
WARNING: file_magic.rules:105 4:105:1 has no service with file_data
WARNING: file_magic.rules:106 4:106:1 has no service with file_data
WARNING: file_magic.rules:107 4:107:1 has no service with file_data
WARNING: file_magic.rules:108 4:108:1 has no service with file_data
WARNING: file_magic.rules:109 4:109:1 has no service with file_data
WARNING: file_magic.rules:110 4:111:1 has no service with file_data
WARNING: file_magic.rules:111 4:112:1 has no service with file_data
WARNING: file_magic.rules:112 4:113:1 has no service with file_data
WARNING: file_magic.rules:113 4:114:1 has no service with file_data
WARNING: file_magic.rules:114 4:115:1 has no service with file_data
WARNING: file_magic.rules:115 4:116:1 has no service with file_data
WARNING: file_magic.rules:116 4:117:1 has no service with file_data
WARNING: file_magic.rules:117 4:118:1 has no service with file_data
WARNING: file_magic.rules:118 4:119:1 has no service with file_data
WARNING: file_magic.rules:119 4:120:1 has no service with file_data
WARNING: file_magic.rules:120 4:121:1 has no service with file_data
WARNING: file_magic.rules:121 4:122:1 has no service with file_data
WARNING: file_magic.rules:122 4:123:1 has no service with file_data
WARNING: file_magic.rules:123 4:124:1 has no service with file_data
WARNING: file_magic.rules:124 4:125:1 has no service with file_data
WARNING: file_magic.rules:125 4:126:1 has no service with file_data
WARNING: file_magic.rules:126 4:127:1 has no service with file_data
WARNING: file_magic.rules:127 4:128:1 has no service with file_data
WARNING: file_magic.rules:128 4:129:1 has no service with file_data
WARNING: file_magic.rules:129 4:130:1 has no service with file_data
WARNING: file_magic.rules:130 4:131:1 has no service with file_data
WARNING: file_magic.rules:131 4:132:1 has no service with file_data
WARNING: file_magic.rules:132 4:133:1 has no service with file_data
WARNING: file_magic.rules:133 4:134:1 has no service with file_data
WARNING: file_magic.rules:134 4:135:1 has no service with file_data
WARNING: file_magic.rules:135 4:136:1 has no service with file_data
WARNING: file_magic.rules:136 4:137:1 has no service with file_data
WARNING: file_magic.rules:137 4:138:1 has no service with file_data
WARNING: file_magic.rules:138 4:139:1 has no service with file_data
WARNING: file_magic.rules:139 4:140:1 has no service with file_data
WARNING: file_magic.rules:140 4:141:1 has no service with file_data
WARNING: file_magic.rules:141 4:142:1 has no service with file_data
WARNING: file_magic.rules:142 4:143:1 has no service with file_data
WARNING: file_magic.rules:143 4:144:1 has no service with file_data
WARNING: file_magic.rules:144 4:145:1 has no service with file_data
WARNING: file_magic.rules:145 4:146:1 has no service with file_data
WARNING: file_magic.rules:146 4:147:1 has no service with file_data
WARNING: file_magic.rules:147 4:148:1 has no service with file_data
WARNING: file_magic.rules:148 4:149:1 has no service with file_data
WARNING: file_magic.rules:149 4:150:1 has no service with file_data
WARNING: file_magic.rules:150 4:151:1 has no service with file_data
WARNING: file_magic.rules:151 4:152:1 has no service with file_data
WARNING: file_magic.rules:152 4:153:1 has no service with file_data
WARNING: file_magic.rules:153 4:154:1 has no service with file_data
WARNING: file_magic.rules:154 4:155:1 has no service with file_data
WARNING: file_magic.rules:155 4:156:1 has no service with file_data
WARNING: file_magic.rules:156 4:157:1 has no service with file_data
WARNING: file_magic.rules:157 4:158:1 has no service with file_data
WARNING: file_magic.rules:158 4:159:1 has no service with file_data
WARNING: file_magic.rules:159 4:160:1 has no service with file_data
WARNING: file_magic.rules:160 4:161:1 has no service with file_data
WARNING: file_magic.rules:161 4:162:1 has no service with file_data
WARNING: file_magic.rules:162 4:163:1 has no service with file_data
WARNING: file_magic.rules:163 4:164:1 has no service with file_data
WARNING: file_magic.rules:164 4:165:1 has no service with file_data
WARNING: file_magic.rules:165 4:166:1 has no service with file_data
WARNING: file_magic.rules:166 4:167:1 has no service with file_data
WARNING: file_magic.rules:167 4:168:1 has no service with file_data
WARNING: file_magic.rules:168 4:169:1 has no service with file_data
WARNING: file_magic.rules:169 4:170:1 has no service with file_data
WARNING: file_magic.rules:170 4:171:1 has no service with file_data
WARNING: file_magic.rules:171 4:172:1 has no service with file_data
WARNING: file_magic.rules:172 4:173:1 has no service with file_data
WARNING: file_magic.rules:173 4:174:1 has no service with file_data
WARNING: file_magic.rules:174 4:175:1 has no service with file_data
WARNING: file_magic.rules:175 4:176:1 has no service with file_data
WARNING: file_magic.rules:176 4:177:1 has no service with file_data
WARNING: file_magic.rules:177 4:178:1 has no service with file_data
WARNING: file_magic.rules:178 4:179:1 has no service with file_data
WARNING: file_magic.rules:179 4:180:1 has no service with file_data
WARNING: file_magic.rules:180 4:181:1 has no service with file_data
WARNING: file_magic.rules:181 4:182:1 has no service with file_data
WARNING: file_magic.rules:182 4:183:1 has no service with file_data
WARNING: file_magic.rules:183 4:184:1 has no service with file_data
WARNING: file_magic.rules:184 4:185:1 has no service with file_data
WARNING: file_magic.rules:185 4:186:1 has no service with file_data
WARNING: file_magic.rules:186 4:187:1 has no service with file_data
WARNING: file_magic.rules:187 4:188:1 has no service with file_data
WARNING: file_magic.rules:188 4:189:1 has no service with file_data
WARNING: file_magic.rules:189 4:190:1 has no service with file_data
WARNING: file_magic.rules:190 4:191:1 has no service with file_data
WARNING: file_magic.rules:191 4:192:1 has no service with file_data
WARNING: file_magic.rules:192 4:193:1 has no service with file_data
WARNING: file_magic.rules:193 4:194:1 has no service with file_data
WARNING: file_magic.rules:194 4:195:1 has no service with file_data
WARNING: file_magic.rules:195 4:196:1 has no service with file_data
WARNING: file_magic.rules:196 4:197:1 has no service with file_data
WARNING: file_magic.rules:197 4:198:1 has no service with file_data
WARNING: file_magic.rules:198 4:199:1 has no service with file_data
WARNING: file_magic.rules:199 4:200:1 has no service with file_data
WARNING: file_magic.rules:200 4:201:1 has no service with file_data
WARNING: file_magic.rules:201 4:202:1 has no service with file_data
WARNING: file_magic.rules:202 4:203:1 has no service with file_data
WARNING: file_magic.rules:203 4:204:1 has no service with file_data
WARNING: file_magic.rules:204 4:205:1 has no service with file_data
WARNING: file_magic.rules:205 4:206:1 has no service with file_data
WARNING: file_magic.rules:206 4:207:1 has no service with file_data
WARNING: file_magic.rules:207 4:208:1 has no service with file_data
WARNING: file_magic.rules:208 4:209:1 has no service with file_data
Finished file_magic.rules:
Finished file_id.rules_file:
Loading ips.rules:
Loading /etc/snort/rules/snort3-app-detect.rules:
ERROR: /etc/snort/rules/snort3-app-detect.rules:29 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:33 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:34 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:36 unknown rule keyword: pcre.
WARNING: /etc/snort/rules/snort3-app-detect.rules:40 1:15185:6 has no service with ssl option
ERROR: /etc/snort/rules/snort3-app-detect.rules:45 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:51 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:74 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:113 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:126 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-app-detect.rules:155 unknown rule keyword: pcre.
Finished /etc/snort/rules/snort3-app-detect.rules:
Loading /etc/snort/rules/snort3-browser-chrome.rules:
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:22 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:23 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:24 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:29 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:30 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:34 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:35 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:36 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:41 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:42 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:45 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:46 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:48 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:50 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:51 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:55 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:56 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:127 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:128 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:131 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:132 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:159 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:175 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-chrome.rules:197 unknown rule keyword: pcre.
Finished /etc/snort/rules/snort3-browser-chrome.rules:
Loading /etc/snort/rules/snort3-browser-firefox.rules:
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:24 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:26 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:27 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:28 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:32 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:35 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:36 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:42 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:43 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:44 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:49 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:52 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:54 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:56 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:57 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:59 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:60 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:61 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:68 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:68 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:69 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:80 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:87 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:91 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:91 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:91 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:109 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:110 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:118 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:129 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:134 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:135 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:136 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:137 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:138 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:141 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:142 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:143 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:144 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:145 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:146 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:148 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:149 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:153 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:154 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:155 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:158 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:159 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:162 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:164 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:168 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:169 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:170 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:171 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:172 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:173 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:175 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:177 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:179 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:180 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:181 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:182 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:183 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:184 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:215 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:217 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:219 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:228 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:229 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:257 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:290 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-firefox.rules:291 unknown rule keyword: pcre.

etc.

ERROR: /etc/snort/rules/snort3-browser-ie.rules:343 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:344 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:346 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:347 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:347 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:348 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:348 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:351 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:352 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:357 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:364 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:369 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:370 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:371 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:372 unknown rule keyword: pcre.
ERROR: /etc/snort/rules/snort3-browser-ie.rules:372 syntax error
ERROR: /etc/snort/rules/snort3-browser-ie.rules:372 Unable to process the IP address: balanced-ips.
FATAL: /etc/snort/rules/snort3-browser-ie.rules:372 ***Rule--PortVar Parse error: (pos=1,error=not a number)
>>drop,policy
>>^
Fatal Error, Quitting..
Errors in snort config tests.  Examine /mnt/sda2/snort.d/test_conf.lua for issues

It is upstream limitation of such old version, search pcre in their changelog.

Basically sed s/pcre\ /pcre2\ /g

Thank you. I am a little disappointed to see this error continue in the subscription ruleset.

Also: Is it possible to run snort in IPS mode and run a VPN client on the same laptop or is it better to separate the two?

Laptop?

Is this an OpenWrt-related question?

You can run [a newer] Snort on another Operating System.

Yes I switched from Raspberry PI s to an old core-i5 machine because Raspberries are too weak for IPS. I use an USB adapter for the wan port.

Since my post I read that I can sniff on LAN and tunnel interface to filter a vpn'ed connection, but which interface should I write first eth0:tun0 or tun0:eth0 in the snort config.