This is related to the bonding mode and _not_ a bug. The bonding module
will drop duplicate frames received on inactive ports, which is normal
behavior. [0] Overall the packets should be getting into the machine
without problems since they are received on the active slave. To confirm
this do the following
1) Check dropped packets from all interfaces. So if eth0/eth1 are connected to
bond0, we may see dropped packets for bond0 and eth0, but not for eth1. This
depends on which interface is the active interface. This can be checked using
the following:
cat /sys/class/net/bond0/bonding/active_slave
So if the active_slave isn't dropping packets, and the inactive slave is
dropping packets this is normal in 'active-backup' mode (or any mode
where there is an inactive slave).
2) If we want both interfaces to not drop packets we can use
'all_slaves_active' bonding module parameter [0].
Check:
cat /sys/class/net/bond0/bonding/all_slaves_active, it should default to 0
which means drop frames on the inactive slave.
If we set this to 1, we will no longer drop frames:
echo 1 | sudo tee /sys/class/net/bond0/bonding/all_slaves_active
** Changed in: linux (Ubuntu)
Status: Expired => Invalid
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https://bugs.launchpad.net/bugs/1041070
Title:
802.3ad bond interface have show high RX dropped packets
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