Hi when i use a PF_PACKET / raw socket when i read data from the socket everything is fine apart from udp packets which are going to the machine on port 2049 sometimes the checksums fail i belive that the data might be getting changed on the udp pakcet somewhere inside the kernel as with the same program on another machine sees the packets fine (no csum error) on the way into the machine. and also the kernel does not report a checksum error though the data out of the raw socket seems not to be the same but however this only seems to happen on a machine which is an nfs server and only on packets to the nfs server port [2049] would anyone be able to shed some light on this ? greatly shortend log below UDP 192.168.1.2[690] -> 192.168.1.1[701] Len:48 UDP 192.168.1.1[701] -> 192.168.1.2[690] Len:28 UDP 192.168.1.1[2540] -> 192.168.1.1[701] Len:80 UDP 192.168.1.1[701] -> 192.168.1.1[2540] Len:32 UDP 192.168.1.1[2540] -> 192.168.1.3[53] Len:42 UDP 192.168.1.3[53] -> 192.168.1.1[2540] Len:119 UDP 192.168.1.1[2540] -> 192.168.1.1[701] Len:80 UDP 192.168.1.1[701] -> 192.168.1.1[2540] Len:32 UDP 192.168.1.1[2540] -> 192.168.1.3[53] Len:42 UDP linux.home[2540] -> 192.168.1.3[53] Len:42 UDP ns.home[53] -> linux.home[2540] Len:113 FAILED UDP CHECKSUM: cyrix.home -> linux.home Packet: 26765 Sniffer: 43102 L:124 UDP linux.home[2049] -> cyrix.home[800] Len:128 UDP cyrix.home[800] -> linux.home[2049] Len:140 UDP linux.home[2049] -> cyrix.home[800] Len:96 UDP linux.home[2049] -> cyrix.home[800] Len:96 FAILED UDP CHECKSUM: cyrix.home -> linux.home Packet: 25007 Sniffer: 40064 L:124 UDP linux.home[2049] -> cyrix.home[800] Len:128 UDP cyrix.home[800] -> linux.home[2049] Len:140 UDP linux.home[2049] -> cyrix.home[800] Len:96 UDP linux.home[2049] -> cyrix.home[800] Len:96 FAILED UDP CHECKSUM: cyrix.home -> linux.home Packet: 17756 Sniffer: 31277 L:120 UDP linux.home[2049] -> cyrix.home[800] Len:128 UDP cyrix.home[800] -> linux.home[2049] Len:140 FAILED UDP CHECKSUM: cyrix.home -> linux.home Packet: 16044 Sniffer: 28285 L:120 UDP linux.home[2049] -> cyrix.home[800] Len:128 UDP cyrix.home[800] -> linux.home[2049] Len:140 UDP linux.home[2049] -> cyrix.home[800] Len:96 -- --------------------------------------------- Check Out: http://stev.org E-Mail: [EMAIL PROTECTED] 2:20pm up 2 days, 21:41, 3 users, load average: 0.14, 0.25, 0.15 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
