dual home network slow response

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slow response on linux centos dual home nic on a load balancer down stream smtp

solution is



echo 2 > /proc/sys/net/ipv4/conf/eth0/rp_filter
echo 2 > /proc/sys/net/ipv4/conf/eth1/rp_filter
echo 2 > /proc/sys/net/ipv4/conf/eth2/rp_filter

also modify /etc/sysctl.conf

# Controls source route verification (previously 1)
net.ipv4.conf.default.rp_filter = 2



 source: https://www.centos.org/forums/viewtopic.php?t=7775


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