patch: use correct ip alias src address for udp replies
Lars Ellenberg <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
FYI, bug: http://sourceforge.net/tracker/index.php?func=detail&aid=1509949&group_id=12694&atid=112694 patch: http://sourceforge.net/tracker/index.php?func=detail&atid=312694&aid=1509943&group_id=12694 the patch is against current sarge version (5.2.2), needs slight tweaks for the 5.0.9 version, and should work as is with 5.3.x (untested). it will fall back to the previous behaviour if at compile time IP_PKTINFO is not defined/available. motivation: you have some cluster, and a virtual ip alias that may migrate between various machines. if you monitor that ip, you currently get replies back originating from the respective primary ip... if there is some firewall involved, you won't get those replies at all. if your client is "smart" enought, if will ignore those replies, so you don't get them either. with this patch the udp response packets originate from the very ip you sent the request to, so the firewall and clients are happy, and your monitoring works again. cheers, -- : Lars Ellenberg Tel +43-1-8178292-55 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com : _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users