On Mon, 31 Jul 2006 00:16:21 -0400
David Coulson [off-list ref] wrote:

This machine has four NICs running the e1000 kernel module. Other than
the BUG() messages, it seems to be running fine. I was running 2.6.15.4
without any issues on the same hardware, although I noticed the e1000
has been updated (and I went for rc3 since I was hitting the panic in -rc2)

Now, I'm not sure if it also has anything to do with this message:

NAT: no longer support implicit source local NAT
NAT: packet src 10.1.1.1 -> dst 207.166.203.131

Any suggestions as to how to go about debugging this?

BUG: warning at net/core/dev.c:1171/skb_checksum_help()
 [<c02e0412>] skb_checksum_help+0x4d/0xf0
 [<c034e4d3>] ip_nat_fn+0x4e/0x19e
 [<c034e78e>] ip_nat_local_fn+0x3d/0xb9
 [<c0314011>] dst_output+0x0/0x7
 [<c03059ee>] nf_iterate+0x40/0x6e

Several people are reporting this.  It's apparently harmless and serves as
a(n odd) way for the net guys to remind themselves that this needs fixing.

It'd be nice to not let this escape into 2.6.18, please?