I'm running 2.6.39.4 (svn checkout on or about 29617) and seeing:
23:47:37.749540 IP (tos 0x0, ttl 64, id 30955, offset 0, flags [DF], proto TCP
(6), length 60)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [S], cksum 0xa8f3
(correct), seq 2937919252, win 14600, options [mss 1460,sackOK,TS val 8744959
ecr 0,nop,wscale 7], length 0
."nd.'.Y8...E..<x.@.@.=j......................9............
..o.........
23:47:37.749641 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6),
length 52)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [S.], cksum 0x848d
(incorrect -> 0x6e28), seq 2458861507, ack 2937919253, win 14600, options [mss
1460,nop,nop,sackOK,nop,wscale 4], length 0
."nd..E..4..@.@..]..............?.......9.................
23:47:37.749800 IP (tos 0x0, ttl 64, id 30956, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [.], cksum 0xe78c
(correct), seq 1, ack 1, win 115, length 0
."nd.'.Y8...E..(x.@.@.=}..................?.P..s..........
23:47:37.749970 IP (tos 0x0, ttl 64, id 30957, offset 0, flags [DF], proto TCP
(6), length 116)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [P.], cksum 0x5427
(correct), seq 1:77, ack 1, win 115, length 76
."nd.'.Y8...E..tx.@.@.=0..................?.P..sT'..GET /gatedesc.xml HTTP/1.1
Connection: Close
Host: 192.168.1.253:49152
23:47:37.750021 IP (tos 0x0, ttl 64, id 17556, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [.], cksum 0x8481
(incorrect -> 0xe422), seq 1, ack 77, win 913, length 0
."nd..E..(D.@[email protected]...............?....aP.......
23:47:37.750718 IP (tos 0x0, ttl 64, id 17557, offset 0, flags [DF], proto TCP
(6), length 303)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [P.], cksum 0xc7d9
(correct), seq 1:264, ack 77, win 913, length 263
."nd..E../D.@[email protected]...............?....aP.......HTTP/1.1 200 OK
CONTENT-LENGTH: 3304
CONTENT-TYPE: text/xml
DATE: Sat, 31 Dec 2011 06:47:37 GMT
LAST-MODIFIED: Sat, 17 Dec 2011 01:57:59 GMT
SERVER: Linux/2.6.39.4, UPnP/1.0, Portable SDK for UPnP devices/1.6.12
X-User-Agent: redsonic
CONNECTION: close
23:47:37.750901 IP (tos 0x0, ttl 64, id 17558, offset 0, flags [DF], proto TCP
(6), length 1500)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [.], seq 264:1724, ack 77,
win 913, length 1460
."nd..E...D.@[email protected][email protected]....)..<?xml version="1.0"?>
<root xmlns="urn:schemas-upnp-org:device-1-0">
<specVersion>
<major>1</major>
<minor>0</minor>
</specVersion>
<device>
<deviceType>urn:schemas-upnp-org:device:InternetGatewayDevice:1</deviceType>
<friendlyName>Linux Internet Gateway Device</friendlyName>
<manufacturer>Linux UPnP IGD Project</manufacturer>
<manufacturerURL>http://linux-igd.sourceforge.net</manufacturerURL>
<modelName>IGD Version 1.00</modelName>
<UDN>uuid:75802409-bccb-40e7-8e6c-fa095ecce13e</UDN>
<iconList>
<icon>
<mimetype>image/gif</mimetype>
<width>118</width>
<height>119</height>
<depth>8</depth>
<url>/ligd.gif</url>
</icon>
</iconList>
<serviceList>
<service>
<serviceType>urn:schemas-dummy-com:service:Dummy:1</serviceType>
<serviceId>urn:dummy-com:serviceId:dummy1</serviceId>
<controlURL>/dummy</controlURL>
<eventSubURL>/dummy</eventSubURL>
<SCPDURL>/dummy.xml</SCPDURL>
</service>
</serviceList>
<deviceList>
<device>
<deviceType>urn:schemas-upnp-org:device:WANDevice:1</deviceType>
<friendlyName>WANDevice</friendlyName>
<manufacturer>Linux UPnP IGD
Project</manufacturer>
<manufacturerURL>http://linux-igd.sourceforg
23:47:37.751011 IP (tos 0x0, ttl 64, id 30958, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [.], cksum 0xe631
(correct), seq 77, ack 264, win 123, length 0
."nd.'.Y8...E..(x.@.@.={[email protected]..{.1........
23:47:37.751068 IP (tos 0x0, ttl 64, id 17559, offset 0, flags [DF], proto TCP
(6), length 1500)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [.], seq 1724:3184, ack 77,
win 913, length 1460
."nd..E...D.@[email protected]>WAN Device on
Linux IGD</modelDescription>
<modelName>Linux IGD</modelName>
<modelNumber>1.00</modelNumber>
<modelURL>http://linux-igd.sourceforge.net</modelURL>
<serialNumber>1.00</serialNumber>
<UDN>uuid:75802409-bccb-40e7-8e6c-fa095ecce13e</UDN>
<UPC>Linux IGD</UPC>
<serviceList>
<service>
<serviceType>urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1</serviceType>
<serviceId>urn:upnp-org:serviceId:WANCommonIFC1</serviceId>
<controlURL>/upnp/control/WANCommonIFC1</controlURL>
<eventSubURL>/upnp/control/WANCommonIFC1</eventSubURL>
<SCPDURL>/gateicfgSCPD.xml</SCPDURL>
</service>
</serviceList>
<deviceList>
<device>
<deviceType>urn:schemas-upnp-org:device:WANConnectionDevice:1</deviceType>
<friendlyName>WANConnectionDevice</friendlyName>
<manufacturer>Linux UPnP IGD
Project</manufacturer>
<manufacturerURL>http://linux-igd.sourceforge.net</manufacturerURL>
<modelDescription>WanConnectionDevice on Linux IGD</modelDescription>
<modelName>Linux IGD</modelName>
<modelNumber>0.95</modelNumber>
<modelURL>http://linux-igd.sourceforge.net</modelURL>
<serialNumber>0.95</serialNumber>
<UDN>uuid:75802409-bccb-40e7-8e6c-fa095ecce13e</UDN>
<UPC>Linux IGD</UPC>
<serviceList>
<service>
<serviceType>urn:sc
23:47:37.751170 IP (tos 0x0, ttl 64, id 17560, offset 0, flags [DF], proto TCP
(6), length 424)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [P.], cksum 0xf677
(correct), seq 3184:3568, ack 77, win 913, length 384
."nd..E...D.@[email protected]:1</serviceType>
<serviceId>urn:upnp-org:serviceId:WANIPConn1</serviceId>
<controlURL>/upnp/control/WANIPConn1</controlURL>
<eventSubURL>/upnp/control/WANIPConn1</eventSubURL>
<SCPDURL>/gateconnSCPD.xml</SCPDURL>
</service>
</serviceList>
</device>
</deviceList>
</device>
</deviceList>
</device>
</root>
23:47:37.751315 IP (tos 0x0, ttl 64, id 17561, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [F.], cksum 0x8481
(incorrect -> 0xd632), seq 3568, ack 77, win 913, length 0
."nd..E..(D.@[email protected].......
23:47:37.751521 IP (tos 0x0, ttl 64, id 30959, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [.], cksum 0xe066
(correct), seq 77, ack 1724, win 146, length 0
."nd.'.Y8...E..(x.@.@.=z...............a..F.P....f........
23:47:37.751559 IP (tos 0x0, ttl 64, id 30960, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [.], cksum 0xda9b
(correct), seq 77, ack 3184, win 169, length 0
."nd.'.Y8...E..(x.@.@.=y...............a..L3P.............
23:47:37.751586 IP (tos 0x0, ttl 64, id 30961, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [.], cksum 0xd905
(correct), seq 77, ack 3568, win 191, length 0
."nd.'.Y8...E..(x.@.@.=x...............a..M.P.............
23:47:37.752562 IP (tos 0x0, ttl 64, id 30962, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.25.60134 > 192.168.1.253.49152: Flags [F.], cksum 0xd903
(correct), seq 77, ack 3569, win 191, length 0
."nd.'.Y8...E..(x.@.@.=w...............a..M.P.............
23:47:37.752621 IP (tos 0x0, ttl 64, id 17562, offset 0, flags [DF], proto TCP
(6), length 40)
192.168.1.253.49152 > 192.168.1.25.60134: Flags [.], cksum 0x8481
(incorrect -> 0xd631), seq 3569, ack 78, win 913, length 0
."nd..E..(D.@[email protected].......
^C
267 packets captured
268 packets received by filter
0 packets dropped by kernel
Odd that every time the checksum is wrong, it's 0x8481.
If I turn off bridging, then I get the correct checksum.
-Philip
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