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https://bugzilla.novell.com/show_bug.cgi?id=668194

https://bugzilla.novell.com/show_bug.cgi?id=668194#c32


--- Comment #32 from Marius Tomaschewski <mt@xxxxxxxxxx> 2011-02-25 10:07:45 
UTC ---
Created an attachment (id=416229)
 --> (http://bugzilla.novell.com/attachment.cgi?id=416229)
Just additional patch logging the tpacket_auxdata/nocsum values

OK, with kernel-xen-2.6.37.1-1.2.2.x86_64, that is on current factory-snapshot,
the dhcp-4.2.0-xen-checksum.patch works fine (here the output with the above
logging patch applied to see it):

*** client:
Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPREQUEST on eth0 to 255.255.255.255
port 67
Feb 25 10:59:27 abraxas-xen1 dhclient: recvmsg with tpacket_auxdata
Feb 25 10:59:27 abraxas-xen1 dhclient: cmsg nocsum: 0 (tp_status=1)
Feb 25 10:59:27 abraxas-xen1 dhclient: decode_udp_ip_header(nocsum: 0) =>
offset: 28
Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPACK from 172.16.4.2
Feb 25 10:59:27 abraxas-xen1 dhclient: bound to 172.16.4.102 -- renewal in 54
seconds.
Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPREQUEST on eth0 to 255.255.255.255
port 67
Feb 25 10:59:27 abraxas-xen1 dhclient: recvmsg with tpacket_auxdata
Feb 25 10:59:27 abraxas-xen1 dhclient: cmsg nocsum: 0 (tp_status=1)
Feb 25 10:59:27 abraxas-xen1 dhclient: decode_udp_ip_header(nocsum: 0) =>
offset: 28
Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPACK from 172.16.4.2

*** server:
Feb 25 10:59:27 abraxas dhcpd: recvmsg with tpacket_auxdata
Feb 25 10:59:27 abraxas dhcpd: cmsg nocsum: 0 (tp_status=1)
Feb 25 10:59:27 abraxas dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28
Feb 25 10:59:27 abraxas dhcpd: DHCPREQUEST for 172.16.4.102 from
00:16:3e:3e:81:86 (abraxas-xen1) via br4000
Feb 25 10:59:27 abraxas dhcpd: DHCPACK on 172.16.4.102 to 00:16:3e:3e:81:86
(abraxas-xen1) via br4000
Feb 25 11:00:22 abraxas dhcpd: recvmsg with tpacket_auxdata
Feb 25 11:00:22 abraxas dhcpd: cmsg nocsum: 8 (tp_status=9)
Feb 25 11:00:22 abraxas dhcpd: decode_udp_ip_header(nocsum: 8) => offset: 28
Feb 25 11:00:22 abraxas dhcpd: DHCPREQUEST for 172.16.4.102 from
00:16:3e:3e:81:86 (abraxas-xen1) via br4000
Feb 25 11:00:22 abraxas dhcpd: DHCPACK on 172.16.4.102 to 00:16:3e:3e:81:86
(abraxas-xen1) via br4000

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