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On Fri, Sep 11, 2009 at 11:24:19AM +0200, Nicolas Haller wrote:
> On Thu, Sep 10, 2009 at 02:24:31PM +0100, Graeme Fowler wrote:
> Hi,
> Ok, so, I done some clean in my conf this morning and all is right now.
> But I have an another problem. It seems LVS don't send the IPIP packet
> to the right place.
> An ipvsadm --list say:
> TCP [2001:7a8:0:fe01::1]:www wlc persistent 120
> -> [2001:7a8:1:5::17]:www Tunnel 1 1 1
> An ifconfig say:
> eth0 Link encap:Ethernet HWaddr 00:30:48:5a:4e:4e
> inet adr:194.79.134.250 Bcast:194.79.134.255 Masque:255.255.255.248
> adr inet6: fe80::230:48ff:fe5a:4e4e/64 Scope:Lien
> adr inet6: 2001:7a8:1:61::250/64 Scope:Global
> dummy0 Link encap:Ethernet HWaddr 22:83:2d:0f:68:7e
> inet adr:194.79.128.128 Bcast:194.79.128.255
> Masque:255.255.255.255
> adr inet6: 2001:7a8:0:fe01::1/64 Scope:Global
> adr inet6: fe80::2083:2dff:fe0f:687e/64 Scope:Lien
> No packet is received to the machine 2001:7a8:1:5::17.
> On the director, tcpdump say this:
> 11:13:56.994105 00:30:48:5a:4e:4e (oui Unknown) > 00:1f:9d:9f:89:42 (oui
> Unknown), ethertype IPv6 (0x86dd), length 134: 2001:7a8:0:fe01::1 >
> 2001:7a8:1:5:::
> Elf-1-pt.tunnel.tserv6.fra1.ipv6.he.net.33405 > 2001:7a8:0:fe01::1.www: S
> 2426580310:2426580310(0) win 4880 <mss 1220,sackOK,timestamp 1075822819
> 0,nop,wscale 6>
> (It's my telnet 2001:7a8:0:fe01::1 80 from a client)
> 11:13:59.993556 00:30:48:5a:4e:4e (oui Unknown) > 00:1f:9d:9f:89:42 (oui
> Unknown), ethertype IPv6 (0x86dd), length 134: 2001:7a8:0:fe01::1 >
> 2001:7a8:1:5::: Elf-1-pt.tunnel.tserv6.fra1.ipv6.he.net.33405 >
> 2001:7a8:0:fe01::1.www: S 2426580310:2426580310(0) win 4880 <mss
> 1220,sackOK,timestamp 1075823569 0,nop,wscale 6>
> (It seems to be the IPIP packet. Here you can see it try to contact
> 2001:7a8:1:5::. I don't know why)
> 11:14:00.012359 00:1f:9d:9f:89:42 (oui Unknown) > 00:30:48:5a:4e:4e (oui
> Unknown), ethertype IPv6 (0x86dd), length 182:
> vl3-swr401-srv-courbevoie.ipv6.nerim.net > 2001:7a8:0:fe01::1: ICMP6,
> destination unreachable, unreachable address 2001:7a8:1:5::, length 128
> (Router tell me 2001:7a8:1:5:: don't exist)
> So it's seems LVS try to send a IPIP packet do 2001:7a8:1:5:: instead of
> send it to 2001:7a8:1:5::17. Do you know why?
Hi,
I have recompiled my kernel with IPVS debug option. I have the same
problem and IPVS seems to know to witch IP address it should send the
IPIP packet.
Here is kernel message when I try to contact my IPv6 service.
[99928.879295] IPVS: lookup/in TCP
[2001:0470:1f0a:11c0:0000:0000:0000:0002]:42806->[2001:07a8:0000:fe01:0000:0000:0000:0001]:80
hit
[99928.879302] IPVS: Incoming packet: TCP
2001:0470:1f0a:11c0:0000:0000:0000:0002:42806->2001:07a8:0000:fe01:0000:0000:0000:0001:80
[99928.879307] Enter: ip_vs_tunnel_xmit_v6, net/netfilter/ipvs/ip_vs_xmit.c
line 646
[99928.879314] IPVS: new dst 2001:07a8:0001:0005:0000:0000:0000:0017, refcnt=4
[99928.879327] Leave: ip_vs_tunnel_xmit_v6, net/netfilter/ipvs/ip_vs_xmit.c
line 727
Regards,
--
Nicolas Haller
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