sending pkt_too_big to self

[xzeneize10]

hello;
Hi all! first post here, was wondering if you could help out with an
annoying problem I have:

Every hour or so I get this message printed to the system log:
"sending pkt_too_big (len[1500] pmtu[1492]) to self"

eth0 Link encap:Ethernet HWaddr 00:40:63:C0:9FB
inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.xxx
Mask:255.255.255.192
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6167889 errors:0 dropped:0 overruns:0 frame:0
TX packets:10007912 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:3159874579 (3013.4 Mb) TX bytes:624677069 (595.7 Mb)

eth1 Link encap:Ethernet HWaddr 00:40:63:CF:9F:25
inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.xxx
Mask:255.255.255.192
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:61889 errors:0 dropped:0 overruns:0 frame:0
TX packets:10007912 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:3159874579 (3013.4 Mb) TX bytes:624677069 (595.7 Mb)


Any help appreciated, thanks all