RHEL: Packet loss when failing back to primary slave of a bond

Solution In Progress - Updated -

Issue

  • Packets are lost when failing back to the primary slave of a bond after the link to that slave comes back up.
  • Client pinging the RHEL server, note that pings with sequence numbers 289 and 290 do not get a response
ping -s 192.168.12.10 1200

PING 192.168.12.10: 1200 data bytes
. . . .
1208 bytes from 192.168.12.10: icmp_seq=283. time=6.31 ms
1208 bytes from 192.168.12.10: icmp_seq=284. time=6.30 ms
1208 bytes from 192.168.12.10: icmp_seq=285. time=6.35 ms
1208 bytes from 192.168.12.10: icmp_seq=286. time=6.33 ms
1208 bytes from 192.168.12.10: icmp_seq=287. time=6.35 ms
1208 bytes from 192.168.12.10: icmp_seq=288. time=6.32 ms <<<< missing 289 and 290
1208 bytes from 192.168.12.10: icmp_seq=291. time=6.39 ms
1208 bytes from 192.168.12.10: icmp_seq=292. time=6.36 ms
1208 bytes from 192.168.12.10: icmp_seq=293. time=6.39 ms

Environment

  • Red Hat Enterprise Linux 6.5
  • bonding mode active-backup (mode 1)

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