[asterisk-bugs] [JIRA] (ASTERISK-26113) res_pjsip: Lots of DNS lookups of local hostname

[Ross Beer (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=231013#comment-231013 ] 

Ross Beer commented on ASTERISK-26113:
--------------------------------------

To re-produce make sure that you do not have your hostname and IP in the /etc/hosts file.

> res_pjsip: Lots of DNS lookups of local hostname
> ------------------------------------------------
>
>                 Key: ASTERISK-26113
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26113
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip
>    Affects Versions: SVN
>         Environment: CentOS 6.5 and Fedora 23.
>            Reporter: Ross Beer
>            Assignee: Unassigned
>            Severity: Minor
>         Attachments: pjsip.conf, pjsip_inbound.conf
>
>
> Asterisk is performing thousands of DNS lookups per minute. 
> The lookups are for its own host name for A and AAAA records. These are milliseconds apart and produce a DoS attack on the name servers.
> This can be confirmed by having incoming calls and performing a wireshark.



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