Lot of traffic after installing bind 8.4.3 on sparc

Mark_Andrews at isc.org Mark_Andrews at isc.org
Wed Dec 3 23:32:40 UTC 2003


> Hello Group
> 
> I encountered the flowing problem with the new version 8.4.3 of bind. Maybe 
> someone have an idea what is going wrong?

	I don't see anything wrong.  All I see below is the server making
	IPv6 queries.  These could be as a result of clients requests or
	it could be the result of named looking for missing AAAA glue.

	8.4.3 will *delay* lookups for missing AAAA records for nameservers,
	if it has a A record to try, until the query to the IPv4 address
	for the nameserver timeout.

	I seriously doubt that you were using 8.4.2 despite your claim.
	BIND 8.4.2 was not released publicly except in deperacted form
	for reference purposes.

	So if you tell us what you were actually running we may be able
	to tell you if the changes in behaviour are expected or not.

	You should also tell us why you think these queries are wrong.

	If you don't want named to use IPv6 for lookups then specify
	'-4' on the command line.

	Mark

> After installing the new version everything went fine. The server gave 
> answer. But afterwards we discover heavy traffic on our network.  
> 
> 11:20:27.450179 IP our.name.server.53 > xxx.168.44.1.53:  41698 [1au] AAAA? 
> sriil5d.ladit.xxxxxx.xx. (65) (DF)
> 11:20:27.451796 IP our.name.server.53 > xxx.168.44.1.53:  48192 AAAA? 
> srvlaaffaibb1b.xxx.xxx.xxx.(54) (DF)
> 11:20:27.451822 IP our.name.server.53 > xxx.25.232.11.53:  16843 [1au] 
> AAAA? esssbadsiff08.xxx.xx. (51) (DF)
> 11:20:27.454873 IP our.name.server.53 > rsyux06.xdxx.xx.53:  22550 AAAA? 
> 02.xdxx.xx. (39) (DF)
> 11:20:27.456028 IP our.name.server.53 > xxx.18.55.1.53:  23405 [1au] AAAA? 
> vlddaib3d.xxx.xxx.xxx.(65) (DF)
> 11:20:27.456053 IP our.name.server.53 > xxx.18.44.1.53:  62674 AAAA? 
> ib3d.xxx.xxx.xxx.(54) (DF)
> 11:20:27.457332 IP our.name.server.53 > xxx.18.55.1.53:  3450 AAAA? 
> srvxxx5.xxx.xxx.xxx.(54) (DF)
> (obfuscated)
> 
> ... a lot of traffic! Afterwards we changed back to 8.4.2 and everything 
> went normal. 
> 
> The system is a `SunOS dns1 5.8 Generic_108528-24 sun4m sparc 
> SUNW,SPARCstation-5`.
> 
> The changelog say something about ipv6 addr. and AAAA requests...
> 
> Any suggestion would be welcome.
> 
> Thx and by
> 
> Dan Berger
> 
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org


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