bonding balance-alb tons of null info packets.

[Nitin Sharma]

Here is my bonding configuration -

modprobe bonding mode=balance-alb miimon=100
ifconfig bond0 192.168.30.3 netmask 255.255.255.0 up
ifenslave bond0 p255p1
ifenslave bond0 p255p2
cat /proc/net/bonding/bond0

bond0 has two interfaces p255p1 (bb:36) and p255p2 (bb:37)

I see tons of same src-mac (slave), dst-mac (same slave) packets, length of
0x60 with NULL payload on each interfaces - coming up to the switch.

This doesn't look normal. Has anyone seen anything like this before? Any
pointers will be appreciated.

Thank you
Nitin

Drivers :
igb: Intel(R) Gigabit Ethernet Network Driver - version 4.1.2-k
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)


[root at localhost ~]# tcpdump -nXXvvvv -i p255p1
tcpdump: listening on p255p1, link-type EN10MB (Ethernet), capture size
65535 bytes
17:01:45.058184 00:25:90:c0:bb:36 > 00:25:90:c0:bb:36 Null Information,
send seq 0, rcv seq 0, Flags [Command], length 46
        0x0000:  0025 90c0 bb36 0025 90c0 bb36 0060 0000  .%...6.%...6.`..
        0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0020:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0030:  0000 0000 0000 0000 0000 0000            ............
17:01:45.058198 00:25:90:c0:bb:36 > 00:25:90:c0:bb:36 Null Information,
send seq 0, rcv seq 0, Flags [Command], length 46
        0x0000:  0025 90c0 bb36 0025 90c0 bb36 0060 0000  .%...6.%...6.`..
        0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0020:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0030:  0000 0000 0000 0000 0000 0000            ............
17:01:45.058200 00:25:90:c0:bb:36 > 00:25:90:c0:bb:36 Null Information,
send seq 0, rcv seq 0, Flags [Command], length 46
        0x0000:  0025 90c0 bb36 0025 90c0 bb36 0060 0000  .%...6.%...6.`..
        0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0020:  0000 0000 0000 0000 0000 0000 0000 0000  ................
        0x0030:  0000 0000 0000 0000 0000 0000            ............
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