No default route in PPPOE connection. It won't connect to the internet, even though it did on 22.03.05. Please change that on the wiki. It's completely borked: https://openwrt.org/toh/asus/rt-n18u
Only 22.03.05 works. I think 23.05 won't work at all probably I lost hope for it.
I understand that you have another thread about PPPoE on 23.05.0.
Can you decribe why you believe that the RT-N18U is specifically not working properly and why the wiki should be updated to reflect that? Currently there is no information that would provide clear evidence of an issue supporting this hardware. Based on the available information, it could be one of three things in software (non-hardware specific):
Of course, there is the (slim) possibility that there is some bug that is affecting your specific hardware, but we cannot conclude this without further evidence (and the wiki will certainly not be updated based on only anecdotal reports from a single user).
Can you describe to us how you did the upgrade? Did you keep settings or reset to defaults when you did the upgrade? If you reset to defaults, did you reconfigure manually or did you restore the backup? Did you capture any log data about the PPPoE connection difficulties? Was other stuff working? Does DHCP work (do you have a method of testing this)?
My configuration is pretty basic actually no VPN, no weird configs, just internet. PPPOE with VLAN tag 35. I do this by changing device manually to "wan.35" which automatically sets VLAN ID 35. That worked since 22.03.05.
I did upgrade on the luci app. I tried both keeping the settings and not keeping the settings. Then I reset to defaults, then tried again. Then I reset to defaults again, then with restore the backup thing. Still didn't work. Here is some PPPOE logs with /etc/ppp/options debug enabled version, rest is just repetitve same logs:
Wed Nov 1 02:05:52 2023 daemon.notice netifd: Interface 'wan' is enabled
Wed Nov 1 02:05:56 2023 daemon.notice netifd: Network device 'wan' link is up
Wed Nov 1 02:05:56 2023 kern.info kernel: [ 155.205625] b53-srab-switch 18007000.ethernet-switch wan: Link is Up - 1Gbps/Full - flow control off
Wed Nov 1 02:05:56 2023 kern.info kernel: [ 155.214779] IPv6: ADDRCONF(NETDEV_CHANGE): wan: link becomes ready
Wed Nov 1 02:05:56 2023 kern.info kernel: [ 155.222257] IPv6: ADDRCONF(NETDEV_CHANGE): wan.35: link becomes ready
Wed Nov 1 02:05:56 2023 daemon.notice netifd: 8021q 'wan.35' link is up
Wed Nov 1 02:05:56 2023 daemon.notice netifd: Interface 'wan' has link connectivity
Wed Nov 1 02:05:56 2023 daemon.notice netifd: Interface 'wan' is setting up now
Wed Nov 1 02:05:56 2023 daemon.info pppd[3416]: Plugin pppoe.so loaded.
Wed Nov 1 02:05:56 2023 daemon.info pppd[3416]: PPPoE plugin from pppd 2.4.9
Wed Nov 1 02:05:56 2023 daemon.notice pppd[3416]: pppd 2.4.9 started by root, uid 0
Wed Nov 1 02:05:56 2023 daemon.debug pppd[3416]: Send PPPOE Discovery V1T1 PADI session 0x0 length 12
Wed Nov 1 02:05:56 2023 daemon.debug pppd[3416]: dst ff:ff:ff:ff:ff:ff src 2c:fd:a1:5f:41:19
Wed Nov 1 02:05:56 2023 daemon.debug pppd[3416]: [service-name] [host-uniq 58 0d 00 00]
Wed Nov 1 02:06:01 2023 daemon.debug pppd[3416]: Send PPPOE Discovery V1T1 PADI session 0x0 length 12
Wed Nov 1 02:06:01 2023 daemon.debug pppd[3416]: dst ff:ff:ff:ff:ff:ff src 2c:fd:a1:5f:41:19
Wed Nov 1 02:06:01 2023 daemon.debug pppd[3416]: [service-name] [host-uniq 58 0d 00 00]
Wed Nov 1 02:06:06 2023 daemon.debug pppd[3416]: Send PPPOE Discovery V1T1 PADI session 0x0 length 12
Wed Nov 1 02:06:06 2023 daemon.debug pppd[3416]: dst ff:ff:ff:ff:ff:ff src 2c:fd:a1:5f:41:19
Wed Nov 1 02:06:06 2023 daemon.debug pppd[3416]: [service-name] [host-uniq 58 0d 00 00]
Wed Nov 1 02:06:11 2023 daemon.warn pppd[3416]: Timeout waiting for PADO packets
Wed Nov 1 02:06:11 2023 daemon.err pppd[3416]: Unable to complete PPPoE Discovery
Wed Nov 1 02:06:11 2023 daemon.info pppd[3416]: Exit.
Wed Nov 1 02:06:11 2023 daemon.err uhttpd[1457]: [info] luci: accepted login on /admin/network/network for root from 192.168.1.156
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is now down
Wed Nov 1 02:06:11 2023 kern.info kernel: [ 170.504763] b53-srab-switch 18007000.ethernet-switch wan: Link is Down
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is disabled
Wed Nov 1 02:06:11 2023 kern.info kernel: [ 170.531542] b53-srab-switch 18007000.ethernet-switch wan: configuring for phy/gmii link mode
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is enabled
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is setting up now
Wed Nov 1 02:06:11 2023 daemon.notice netifd: 8021q 'wan.35' link is down
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' has link connectivity loss
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Network device 'wan' link is down
Wed Nov 1 02:06:11 2023 daemon.notice netifd: wan (3446): Command failed: ubus call network.interface notify_proto { "action": 1, "command": [ "\/usr\/sbin\/pppd", "nodetach", "ipparam", "wan", "ifname", "pppoe-wan", "lcp-echo-interval", "20", "lcp-echo-failure", "20", "lcp-echo-adaptive", "nodefaultroute", "usepeerdns", "maxfail", "1", "user", "xxxxxxx@turk.net", "password", "xxxxxxx", "ip-up-script", "\/lib\/netifd\/ppp-up", "ip-down-script", "\/lib\/netifd\/ppp-down", "mtu", "1500", "mru", "1500", "plugin", "pppoe.so", "nic-wan.35" ], "interface": "wan" } (Permission denied)
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is now down
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is disabled
Wed Nov 1 02:06:11 2023 kern.info kernel: [ 170.892442] b53-srab-switch 18007000.ethernet-switch wan: configuring for phy/gmii link mode
Wed Nov 1 02:06:11 2023 daemon.notice netifd: Interface 'wan' is enabled
Wed Nov 1 02:06:14 2023 daemon.notice netifd: Network device 'wan' link is up
Wed Nov 1 02:06:14 2023 kern.info kernel: [ 174.005115] b53-srab-switch 18007000.ethernet-switch wan: Link is Up - 1Gbps/Full - flow control off
Wed Nov 1 02:06:14 2023 kern.info kernel: [ 174.014286] IPv6: ADDRCONF(NETDEV_CHANGE): wan: link becomes ready
Wed Nov 1 02:06:14 2023 kern.info kernel: [ 174.021772] IPv6: ADDRCONF(NETDEV_CHANGE): wan.35: link becomes ready
Wed Nov 1 02:06:14 2023 daemon.notice netifd: 8021q 'wan.35' link is up
Wed Nov 1 02:06:14 2023 daemon.notice netifd: Interface 'wan' has link connectivity
Wed Nov 1 02:06:14 2023 daemon.notice netifd: Interface 'wan' is setting up now
Wed Nov 1 02:06:14 2023 daemon.info pppd[3589]: Plugin pppoe.so loaded.
Wed Nov 1 02:06:14 2023 daemon.info pppd[3589]: PPPoE plugin from pppd 2.4.9
Wed Nov 1 02:06:14 2023 daemon.notice pppd[3589]: pppd 2.4.9 started by root, uid 0
Wed Nov 1 02:06:14 2023 daemon.debug pppd[3589]: Send PPPOE Discovery V1T1 PADI session 0x0 length 12
Wed Nov 1 02:06:14 2023 daemon.debug pppd[3589]: dst ff:ff:ff:ff:ff:ff src 2c:fd:a1:5f:41:19
Wed Nov 1 02:06:14 2023 daemon.debug pppd[3589]: [service-name] [host-uniq 05 0e 00 00]
Doesn't work on 23.05.2 either. However my Archer C7 v5 works fine.