Bug 163470
| Summary: | bad cksum in tcpdump(1) output | ||
|---|---|---|---|
| Product: | Base System | Reporter: | kes-kes |
| Component: | bin | Assignee: | freebsd-net (Nobody) <net> |
| Status: | Closed Not A Bug | ||
| Severity: | Affects Only Me | CC: | hiren |
| Priority: | Normal | ||
| Version: | 9.0-CURRENT | ||
| Hardware: | Any | ||
| OS: | Any | ||
Yes it is expected when doing offloading. If thats not the case, please reopen the bug. |
tcpdump -n -i vlan492 -vv 10:40:47.679077 IP (tos 0x0, ttl 1, id 60569, offset 0, flags [DF], proto TCP (6), length 40, bad cksum 0 (->8a69)!) 77.93.52.10.179 > 77.93.52.9.20224: Flags [.], cksum 0x02e8 (incorrect -> 0xc4f9), seq 23, ack 55, win 8759, length 0 10:41:06.339857 IP (tos 0xc0, ttl 1, id 46979, offset 0, flags [DF], proto TCP (6), length 59, bad cksum 0 (->bea8)!) 77.93.52.14.24404 > 77.93.52.9.179: Flags [P.], cksum 0x02ff (incorrect -> 0x25e0), seq 20:39, ack 219, win 8760, length 19: BGP, length: 19 is it right behaviour?