Date: Tue, 19 Jan 2016 01:45:26 -0800 From: perryh@pluto.rain.com (Perry Hutchison) To: freebsd-questions@freebsd.org Subject: resolver not working in a chroot Message-ID: <569e05b6.2RStkLc7SZIg/dVM%perryh@pluto.rain.com>
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The resolver is not working in a chroot (to the 10.2 memstick image, with its /tmp, /var/run, and /var/tmp made writable by mounting tmpfs on them): # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt ping pkg.FreeBSD.org ping: cannot resolve pkg.FreeBSD.org: Host name lookup failure but it works when not in a chroot: # ping pkg.FreeBSD.org PING pkg.FreeBSD.org (96.47.72.71): 56 data bytes 64 bytes from 96.47.72.71: icmp_seq=0 ttl=51 time=97.329 ms ... What would cause this? So far I have checked: ping works in the chroot if given the IP address (showing that the chroot environment does have network access, so the resolver "should" be able to reach a nameserver): # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt ping 96.47.72.71 PING 96.47.72.71 (96.47.72.71): 56 data bytes 64 bytes from 96.47.72.71: icmp_seq=0 ttl=51 time=97.717 ms ... host(1) works, and gives the same result, in both environments: # host pkg.FreeBSD.org pkg.FreeBSD.org has address 96.47.72.71 ... # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt host pkg.FreeBSD.org pkg.FreeBSD.org has address 96.47.72.71 ... Ignoring comments, both /etc/nsswitch.conf are the same: # egrep -v '^#' /etc/nsswitch.conf group: compat group_compat: nis hosts: files dns networks: files passwd: compat passwd_compat: nis shells: files services: compat services_compat: nis protocols: files rpc: files # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt egrep -v '^#' /etc/nsswitch.conf group: compat group_compat: nis hosts: files dns networks: files passwd: compat passwd_compat: nis shells: files services: compat services_compat: nis protocols: files rpc: files as are both /etc/resolv.conf: # egrep -v '^#' /etc/resolv.conf nameserver 192.168.0.1 nameserver 8.8.8.8 nameserver 8.8.4.4 # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt egrep -v '^#' /etc/resolv.conf nameserver 192.168.0.1 nameserver 8.8.8.8 nameserver 8.8.4.4 and there is no mention of any freebsd.org host in either environment's /etc/hosts: # egrep 'freebsd\.org' /etc/hosts # chroot -u 0 -g 0 -G 105,0,5,20,25 /mnt egrep 'freebsd\.org' /etc/hosts
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