<div dir="ltr">Looks like a DNS issue.</div><div class="gmail_extra"><br><br><div class="gmail_quote">On 21 April 2013 11:05, Dereck D <span dir="ltr"><<a href="mailto:dereck.s@gmail.com" target="_blank">dereck.s@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello List.<br>
Last month i started to face a strange issue on an asterisk server<br>
1.8.9.3 built on Centos 5.3 x86_64 dedicated server.<br>
out of the blue UDP stops responding .. and keep getting the following output:<br>
<br>
---------------------------------- Opening message for the problem<br>
--------------------------------------------------<br>
[Mar 21 09:57:04] ERROR[6748] netsock2.c:<br>
getaddrinfo("<a href="http://pbx2.server.com" target="_blank">pbx2.server.com</a>", "(null)", ...): Temporary failure in<br>
name resolution<br>
[Mar 21 09:57:04] WARNING[6748] acl.c: Unable to lookup '<a href="http://pbx2.server.com" target="_blank">pbx2.server.com</a>'<br>
----------------------------------------------------------------THEN<br>
-------------------------------------------------------------<br>
[Mar 21 09:57:04] NOTICE[6748] chan_sip.c: Peer 'YYYY' is now<br>
UNREACHABLE! Last qualify: 10<br>
[Mar 21 09:57:04] NOTICE[6748] chan_sip.c: Peer 'C1045' is now<br>
UNREACHABLE! Last qualify: 140<br>
[Mar 21 09:57:04] NOTICE[6748] chan_sip.c: Peer 'XXXX' is now<br>
UNREACHABLE! Last qualify: 33<br>
[Mar 21 09:57:15] NOTICE[6748] chan_sip.c: -- Registration for<br>
'<a href="mailto:8885008@pbx2.server.com">8885008@pbx2.server.com</a>' timed out, trying again (Attempt #3)<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C3000' is now<br>
UNREACHABLE! Last qualify: 87<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C5005' is now<br>
UNREACHABLE! Last qualify: 241<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1071' is now<br>
UNREACHABLE! Last qualify: 117<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1070' is now<br>
UNREACHABLE! Last qualify: 115<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1077' is now<br>
UNREACHABLE! Last qualify: 101<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1073' is now<br>
UNREACHABLE! Last qualify: 96<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1047' is now<br>
UNREACHABLE! Last qualify: 132<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1072' is now<br>
UNREACHABLE! Last qualify: 138<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1042' is now<br>
UNREACHABLE! Last qualify: 158<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C5006' is now<br>
UNREACHABLE! Last qualify: 267<br>
[Mar 21 09:57:21] NOTICE[6748] chan_sip.c: Peer 'C1053' is now<br>
UNREACHABLE! Last qualify: 136<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: -- Registration for<br>
'<a href="mailto:8885005@pbx2.server.com">8885005@pbx2.server.com</a>' timed out, trying again (Attempt #3)<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: Peer 'ipkall1' is now<br>
UNREACHABLE! Last qualify: 168<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: Peer 'C1078' is now<br>
UNREACHABLE! Last qualify: 141<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: Peer 'C1051' is now<br>
UNREACHABLE! Last qualify: 139<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: Peer 'C1046' is now<br>
UNREACHABLE! Last qualify: 157<br>
[Mar 21 09:57:41] NOTICE[6748] chan_sip.c: Peer 'C1076' is now<br>
UNREACHABLE! Last qualify: 116<br>
<br>
<br>
this problem kept repeating randomly two or three times a day causing<br>
me losses. and then i migrated to another Centos 6x x86_64 dedicated<br>
server same asterisk version.<br>
everything returns to normal if i reboot the server. for a moment i<br>
thought i wasn't even able to nslookup but i could wget or yum or do<br>
other stuff..although i have my iptables disabled for a the last week<br>
for testing purposes.<br>
what i did today after the problem is:<br>
bindaddress: set to server IPv4 address instead of defaulting.<br>
disabled IPv6 from the server.<br>
<br>
<br>
any suggestions to what is causing this issue?<br>
<br>
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</blockquote></div><br></div>