[asterisk-users] 1.6.1: "DNS error" but ping works

[sean darcy]

With 1.6.1 svn:

[2009-04-26 15:01:00] NOTICE[1844]: chan_sip.c:9927 sip_reg_timeout: 
-- Registration for '17470121145 at proxy01.sipphone.com' timed out, trying 
again (Attempt #30)
[2009-04-26 15:01:00] WARNING[1844]: acl.c:376 ast_get_ip_or_srv: Unable 
to lookup 'proxy01.sipphone.com'
[2009-04-26 15:01:00] WARNING[1844]: chan_sip.c:10037 transmit_register: 
Probably a DNS error for registration to 
1747yyyxxxx at proxy01.sipphone.com, trying REGISTER again (after 20 seconds)

but ping works:

ping proxy01.sipphone.com
PING northamerica.sipphone.com (198.65.166.131) 56(84) bytes of data.
64 bytes from northamerica.sipphone.com (198.65.166.131): icmp_seq=1 
ttl=52 time=96.5 ms
64 bytes from northamerica.sipphone.com (198.65.166.131): icmp_seq=2 
ttl=52 time=94.4 ms

Is this a bug, or could it be caused by a faulty configuration?

sean