Asterisk on 21.02 does strange address lookup

Installing and Using OpenWrt
1

After installing 21.02-rc3 and asterisk to my router, I found this strange logs using logread after each incoming call:

Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] ERROR[5598]: netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("Router", "(null)", ...): Name does not resolve
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] WARNING[5598]: acl.c:890 resolve_first: Unable to lookup 'Router'
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] ERROR[5598]: netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("Router", "(null)", ...): Name does not resolve
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] WARNING[5598]: acl.c:890 resolve_first: Unable to lookup 'Router'
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] ERROR[6686]: netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("Router", "(null)", ...): Name does not resolve
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] WARNING[6686]: acl.c:890 resolve_first: Unable to lookup 'Router'
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] ERROR[6688]: netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("Router", "(null)", ...): Name does not resolve
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] WARNING[6688]: acl.c:890 resolve_first: Unable to lookup 'Router'
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] ERROR[6689]: netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("Router", "(null)", ...): Name does not resolve
Sun Aug  1 17:46:16 2021 daemon.info asterisk[5548]: [Aug  1 17:46:16] WARNING[6689]: acl.c:890 resolve_first: Unable to lookup 'Router'

'Router' is the hostname of my router. That string is nowhere in the /etc/asterisk/ directory. Why is asterisk trying to resolve that name? As far as I know this problem was not in 19.07. The phone works fine, BTW

1 Like
2 
ubus call system board; uci show dhcp; \
head -v -n -0 /etc/resolv.* /tmp/resolv.* /tmp/resolv.*/*; \
nslookup router; nslookup router localhost
3 
root@Router:/# ubus call system board
{
        "kernel": "5.4.124",
        "hostname": "Router",
        "system": "xRX200 rev 1.1",
        "model": "ZyXEL P-2812HNU-F1",
        "board_name": "zyxel,p-2812hnu-f1",
        "release": {
                "distribution": "OpenWrt",
                "version": "21.02.0-rc3",
                "revision": "r16172-2aba3e9784",
                "target": "lantiq/xrx200",
                "description": "OpenWrt 21.02.0-rc3 r16172-2aba3e9784"
        }
}
root@Router:/# uci show dhcp
dhcp.@dnsmasq[0]=dnsmasq
dhcp.@dnsmasq[0].domainneeded='1'
dhcp.@dnsmasq[0].localise_queries='1'
dhcp.@dnsmasq[0].rebind_protection='1'
dhcp.@dnsmasq[0].rebind_localhost='1'
dhcp.@dnsmasq[0].local='/lan/'
dhcp.@dnsmasq[0].domain='lan'
dhcp.@dnsmasq[0].expandhosts='1'
dhcp.@dnsmasq[0].authoritative='1'
dhcp.@dnsmasq[0].readethers='1'
dhcp.@dnsmasq[0].leasefile='/tmp/dhcp.leases'
dhcp.@dnsmasq[0].resolvfile='/tmp/resolv.conf.auto'
dhcp.@dnsmasq[0].filterwin2k='1'
dhcp.@dnsmasq[0].enable_tftp='1'
dhcp.@dnsmasq[0].tftp_root='/tmp/tftpd'
dhcp.@dnsmasq[0].localservice='0'
dhcp.wan=dhcp
dhcp.wan.interface='wan'
dhcp.wan.ignore='1'
dhcp.@host[0]=host
dhcp.@host[0].name='HL-4150CDN'
dhcp.@host[0].mac='00:1b:a9:61:a2:eb'
dhcp.@host[0].ip='172.16.20.190'
dhcp.@domain[0]=domain
dhcp.@domain[0].name='HL-4150CDN.lan'
dhcp.@domain[0].ip='172.16.20.190'
dhcp.WLAN2=dhcp
dhcp.WLAN2.start='100'
dhcp.WLAN2.leasetime='12h'
dhcp.WLAN2.limit='150'
dhcp.WLAN2.interface='WLAN2'
dhcp.WLAN2.dhcpv6='server'
dhcp.WLAN2.ra_management='1'
dhcp.WLAN2.ra='server'
dhcp.Wlan1=dhcp
dhcp.Wlan1.start='100'
dhcp.Wlan1.leasetime='12h'
dhcp.Wlan1.limit='150'
dhcp.Wlan1.interface='Wlan1'
dhcp.Wlan1.dhcpv6='server'
dhcp.Wlan1.ra_management='1'
dhcp.Wlan1.ra='server'
dhcp.Guest=dhcp
dhcp.Guest.start='100'
dhcp.Guest.leasetime='12h'
dhcp.Guest.limit='150'
dhcp.Guest.interface='Guest'
dhcp.lan=dhcp
dhcp.lan.leasetime='12h'
dhcp.lan.limit='150'
dhcp.lan.interface='lan'
dhcp.lan.dhcpv6='server'
dhcp.lan.ra_management='1'
dhcp.lan.ra='server'
dhcp.lan.start='20'
dhcp.ATA=dhcp
dhcp.ATA.start='100'
dhcp.ATA.leasetime='12h'
dhcp.ATA.limit='150'
dhcp.ATA.interface='ATA'
dhcp.USB=dhcp
dhcp.USB.start='100'
dhcp.USB.leasetime='12h'
dhcp.USB.limit='150'
dhcp.USB.interface='USB'
dhcp.USB.ra='server'
root@Router:/# head -v -n -0 /etc/resolv.* /tmp/resolv.* /tmp/resolv.*/*
==> /etc/resolv.conf <==
# Interface wan
nameserver 213.75.63.78
nameserver 213.75.63.79

==> /tmp/resolv.conf <==
# Interface wan
nameserver 213.75.63.78
nameserver 213.75.63.79

==> /tmp/resolv.conf.auto <==

==> /tmp/resolv.conf.d <==
head: /tmp/resolv.conf.d: I/O error

==> /tmp/resolv.conf.d/resolv.conf.auto <==
# Interface wan
nameserver 213.75.63.78
nameserver 213.75.63.79
root@Router:/# nslookup router
Server:         213.75.63.78
Address:        213.75.63.78#53

** server can't find router: NXDOMAIN
** server can't find router: NXDOMAIN
root@Router:/# nslookup router localhost
Server:         localhost
Address:        127.0.0.1#53

Name:      router
Address 1: 172.16.20.254
Address 2: 172.16.24.254
Address 3: 172.16.23.254
Address 4: 192.168.1.1
Address 5: 172.16.20.254
Address 6: 172.16.27.254
Address 7: 172.16.28.254
*** Can't find router: No answer
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4 
uci set dhcp.@dnsmasq[0].resolvfile="/tmp/resolv.conf.d/resolv.conf.auto"
uci commit dhcp
/etc/init.d/dnsmasq restart
5

OK, that solved the issue. Thanks. Yet it doesn't tell why asterisk tries to resolve that hostname.

1 Like
6

I'm not sure about the internals of Asterisk, but it's common practice for mail and web servers.

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