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List:       lartc
Subject:    link load balancing and removal of routing cache
From:       Oguz Yilmaz <oguzyilmazlist () gmail ! com>
Date:       2014-08-28 17:14:01
Message-ID: CAAo+KFmP-ESZ-rggewx943N13wPZ0ktnZ2Duo99usx1Jx4JDrA () mail ! gmail ! com
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Hello,

Starting with 3.6, routing cache is removed from the kernel.
(http://article.gmane.org/gmane.linux.network/238256 )

We were using multiple nexthop type default gateways formerly.
(http://lartc.org/howto/lartc.rpdb.multiple-links.html#AEN297)
default         nexthop via 192.168.1.11  dev eth0 weight 1
nexthop via 192.168.1.9  dev eth0 weight 20

Routing cache was providing some sort of persistency which is tunable
by kernel tunables. gc_...

After removal of kernel routing cache, no persistency exists and
stateful connections are broken easily. Each packet of a connection
may go any of the links.

1- Is this the case expected?

2- What would be your suggestions for replacement?


Best Regards,


--
Oguz
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