Binding on addresses

[Mark Andrews]

In message <h4ofir$rtq$1 at ger.gmane.org>, Chris Hills writes:
> Hi
> 
> After changing configuration from "listen-on-v6 { any; };" to using 
> specific addresses, I observed the following in the log after issuing 
> `rndc reload` (times are CEST):-
> 
> 29-Jul-2009 04:44:22.893 network: error: binding TCP socket: address in use
> 29-Jul-2009 04:44:22.893 network: error: binding TCP socket: address in use
> 29-Jul-2009 04:44:22.893 network: info: no longer listening on ::#53
> 29-Jul-2009 04:44:22.965 general: info: reloading configuration succeeded
> 29-Jul-2009 04:44:23.031 general: info: reloading zones succeeded
> 29-Jul-2009 05:19:10.179 general: info: received control channel command 
> 'reload'
> 29-Jul-2009 05:19:10.180 general: info: loading configuration from 
> '/usr/local/bind/9.6.1-P1/etc/named.conf'
> 29-Jul-2009 05:19:10.182 general: info: using default UDP/IPv4 port 
> range: [1024, 65535]
> 29-Jul-2009 05:19:10.182 general: info: using default UDP/IPv6 port 
> range: [1024, 65535]
> 29-Jul-2009 05:19:10.194 general: info: reloading configuration succeeded
> 29-Jul-2009 05:19:10.194 general: info: reloading zones succeeded
> 
> After the reload, BIND no longer listened on tcp sockets, but udp 
> sockets worked ok. After restarting named, it was listening on tcp 
> sockets once more. Based on the log it looks like it is trying to bind 
> to the address-specific tcp sockets before releasing tcp [::]:53.

	Linux's IP stack is broken.  Reloading a second time would
	have fixed it.
 
> BIND is 9.6.1-P1 on Linux x86.
> 
> Regards,
> 
> Chris
> 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org