[avahi] No Search list for host-name lookup in resolv.conf written from avahi-dnsconfd

[Lennart Poettering]

On Sat, 01.04.06 23:59, Claus Klein (claus.klein at arcormail.de) wrote:

> With this modifications, it works for me on Suse linux 9.3:

Seems interesting to me. I would like to merge these changes. However,
I see the following problem. You call dnsdomainname for the search
domain. AFAIK this command does a forward and reverse host name lookup
for the host. Due to this the resulting name data is probably
dependent on the old state of /etc/resolv.conf. This makes a strange
feedback system. Is that really waht you want? Isn't there a big
chance, that dnsdomainname fails completely? (i.e. because the host
name is assigned a single-label name via /etc/hosts)
> 
> P3linux:/usr/local/etc/avahi # diff -u avahi-dnsconfd.action.orig avahi-dnsconfd.action
> --- avahi-dnsconfd.action.orig  2006-03-27 22:42:49.000000000 +0200
> +++ avahi-dnsconfd.action       2006-04-01 23:35:31.000000000 +0200
> @@ -46,6 +46,16 @@
>              echo "nameserver $n"
>          done | /sbin/resolvconf -a "$AVAHI_INTERFACE.avahi"
>      fi
> +elif [ -x /sbin/modify_resolvconf ] ; then
> +
> +    # We have Suse's modify_resolvconf tool
> +
> +    if [ "x$AVAHI_INTERFACE_DNS_SERVERS" = "x" ] ; then
> +        /sbin/modify_resolvconf restore -s dnsconfd -p avahi-dnsconfd -t "prepared by ck" -e "$AVAHI_INTERFACE"
> +    else
> +        /sbin/modify_resolvconf  modify -s dnsconfd -p avahi-dnsconfd -t "prepared by ck" -e "$AVAHI_INTERFACE" \
> +        -n "$AVAHI_DNS_SERVERS" -l `dnsdomainname`
> +    fi
>  else
> 
>      # No resolvconf tool available
> @@ -55,8 +65,9 @@
>      else
>          test -f /etc/resolv.conf.avahi || mv /etc/resolv.conf /etc/resolv.conf.avahi
> 
> +        echo search `dnsdomainname` > /etc/resolv.conf
>          for n in $AVAHI_DNS_SERVERS ; do
>              echo "nameserver $n"
> -        done > /etc/resolv.conf
> +        done | sort -u >> /etc/resolv.conf
>      fi
>  fi

Lennart


-- 
Lennart Poettering; lennart [at] poettering [dot] net
ICQ# 11060553; GPG 0x1A015CC4; http://0pointer.net/lennart/