what does this mean?

frostbyte (fb@chibacity.com)
Sat, 28 Jun 1997 14:13:07 -0500


sorry about the silly question but what does the following kernel
message mean?
if you need more info on the box or the kernel configuration let me
know.

gollumII kernel: MASQ: failed TCP/UDP checksum from 207.226.80.1.58!

thanks
nick
fb@chibacity.com