[asterisk-dev] DNS A queries for unregister extension

thiago.fernandes thiago.fernandes at locaweb.com.br
Tue Sep 1 10:50:59 CDT 2009


Hi,

I was recently analysing some captures with ethereal and found out that 
Asterisk 1.4.26.1 was doing DNS A queries for domain names like 
extension.mydomain.com

This behavior happens when Asterisk Dial to unregister peer, example:

- Peer 200 registered
- Peer 201 unregister
- Application "Dial(SIP/200&SIP/201)"

Analysing the captures I found:

DNS Standard query SRV _sip._udp.201
DNS Standard query response, No such name
DNS Standard query SRV _sip._udp.201.mydomain.com
DNS Standard query response, No such name
DNS Standard query A 201
DNS Standard query response, No such name
DNS Standard query A 201.mydomain.com
DNS Standard query response, No such name


Any help would be really appreciated.



Thanks,

Thiago








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