Krzysztof Oledzki <[EMAIL PROTECTED]> wrote: > > It seems that after some not very recent changes udp and tcp packes > carring data send by a loopback have incorrect cksum:
This correct. The loopback interfaces has the no checksum flag set so we only provide a partial checksum on output (i.e., the pseudoheader without the payload). We even export this to user-space via a flag. So you should fix tcpdump to read this flag and ignore the checksum. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html