[Dnsmasq-discuss] 2.53rc2

[clemens fischer]

Simon Kelley wrote:

> 2.53rc2 is now at
>
> http://www.thekelleys.org.uk/dnsmasq/release-candidates/dnsmasq-2.53rc2.tar.gz
>
> This fixes one problem (dhcp-generate-names complains if provided with
> an argument) It also updates some translations and fixes various typos
> revealed by them.

This particulra error is gone, but I cannot really verify the rest.
I let dnsmasq forward dns queries to bind-9, which worked fine
yesterday.  Today I get log lines like:

    dnsmasq: failed to create listening socket: Address already in use

and

    dnsmasq: failed to bind server socket for : Address family not
    supported by protocol

Very unfortunately, this latter error happens even with setting bind-9
off, eg. when nothing is in the way, no other dhcp or dns server.

The problem lies with dnsmasq binding the wildcard addresses.  Not even
the setting:

    except-interface=nic0
    except-interface=nicI
    except-interface=lo
    no-dhcp-interface=nic0
    no-dhcp-interface=nicI
    no-dhcp-interface=lo
    bind-interfaces

helps.

This is what I can get to work with 2.53rc1:

  COMMAND    PID    USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
  ...
  dnsmasq  15815  nobody    5u  IPv4  62116      0t0  UDP *:67
  dnsmasq  15815  nobody    6u  IPv4  62130      0t0  UDP *:53
  dnsmasq  15815  nobody    7u  IPv4  62131      0t0  TCP *:53 (LISTEN)
  dnsmasq  15815  nobody    8u  IPv6  62132      0t0  UDP *:53
  dnsmasq  15815  nobody    9u  IPv6  62133      0t0  TCP *:53 (LISTEN)
  ...
  named    15868   named   20u  IPv4  62345      0t0  TCP 127.0.0.1:953 (LISTEN)
  named    15868   named  512u  IPv4  62331      0t0  UDP 127.0.0.1:53
  named    15868   named  513u  IPv4  62333      0t0  UDP 127.0.0.24:53
  named    15868   named  514u  IPv4  62335      0t0  UDP 127.0.0.25:53
  named    15868   named  515u  IPv4  62337      0t0  UDP 127.0.0.53:53
  named    15868   named  516u  IPv4  62339      0t0  UDP 95.88.27.175:53
  named    15868   named  517u  IPv6  62341      0t0  UDP [::1]:53

2.53rc2 doesn't let me use named/IPv6/udp/53.  I switched that off, but
I'd like to have IPv6 name resolution through my 6-to-4 tunnel if
possible.  bind-9, when starting after dnsmasq, has less trouble,
propably because it binds particular IPs.  OTOH, I cannot let dnsmasq
bind like this, because the interfaces it is to handle come and go
(wlan).

I'd very much like dnsmasq to say what port/adress family makes trouble.


clemens