[support] Destination unreachable from HA on BU???
Mattias Blomqvist
mattias.blomqvist at gmail.com
Mon Mar 23 23:02:25 JST 2009
Hi,
libc6 is standard debian 5.0 which is 2.7-18 (afaik).
I also came to think of libc problems so I recompiled from the source
package from nautilus6 but with exactly the same result.
I've tracked the issue down to mh_recv() in mh_listen() in mh.c never
returning any data. This in turn is because recvmsg() in mh_recv()
never returns any data.
This seems to be in line with the destination unreachable being sent.
It seems like the kernel or some lib doesn't think that any process is
interested in the BU.
Any ideas are welcome.
BR,
Mattias
On Mon, Mar 23, 2009 at 2:17 PM, Romain KUNTZ <kuntz at lsiit.u-strasbg.fr> wrote:
> Seems also OK to me. That is odd, it's the first time I hear about such
> issue.
> I've got the sane configuration here (2.6.24-1 kernel & mip6d from
> nautilus6) running fine.
>
> Which libc6 version are you using? Mine is 2.7-18.
>
> Cheers,
> romain
>
> On 2009/03/23, at 13:18, Mattias Blomqvist wrote:
>
>> Hi,
>>
>> Good question. Missed that one. It says the following with mip6d and
>> radvd running:
>>
>> HA:~# netstat -6 -a
>> Active Internet connections (servers and established)
>> Proto Recv-Q Send-Q Local Address Foreign Address State
>> tcp6 0 0 localhost:7777 [::]:* LISTEN
>> tcp6 0 0 [::]:ssh [::]:* LISTEN
>> tcp6 0 0 localhost:6010 [::]:* LISTEN
>> raw6 0 0 [::]:ipv6-icmp [::]:* 7
>> raw6 0 0 [::]:ipv6-icmp [::]:* 7
>> raw6 0 0 [::]:135 [::]:* 7
>>
>> After stopping mip6d and radvd it says:
>> HA:~# netstat -6 -a
>> Active Internet connections (servers and established)
>> Proto Recv-Q Send-Q Local Address Foreign Address State
>> tcp6 0 0 [::]:ssh [::]:* LISTEN
>> tcp6 0 0 localhost:6010 [::]:* LISTEN
>>
>>
>> Looks ok to me. Or?
>>
>> BR,
>> Mattias
>>
>> On Mon, Mar 23, 2009 at 1:06 PM, Romain KUNTZ <kuntz at lsiit.u-strasbg.fr>
>> wrote:
>>>
>>> Hi,
>>>
>>> What does netstat tells you?
>>>
>>> Cheers,
>>> romain
>>>
>>> On 2009/03/23, at 11:26, Mattias Blomqvist wrote:
>>>
>>>> Hello
>>>>
>>>> I'm getting destination unreachable icmp errors with code set to "port
>>>> unreachable" (4) from the HA with mip6d running (and without of
>>>> course).
>>>> This is under Debian 5.0 but with the kernel and mip6d from
>>>> nautilus6.org.
>>>>
>>>> HA:~# uname -a
>>>> Linux HA 2.6.24-1-mip6-686 #1 SMP Tue Feb 26 03:20:31 UTC 2008 i686
>>>> GNU/Linux
>>>>
>>>> If I run mip6d in the foreground it says the following:
>>>> HA:~# mip6d
>>>> mip6d[2497]: MIPL Mobile IPv6 for Linux v2.0.2-umip-0.4 started (Home
>>>> Agent)
>>>> Mon Mar 23 11:41:16 main: MIPL Mobile IPv6 for Linux started in debug
>>>> mode, not detaching from terminal
>>>> Mon Mar 23 11:41:16 conf_show: config_file = /etc/mip6d.conf
>>>> Mon Mar 23 11:41:16 conf_show: vt_hostname = localhost
>>>> Mon Mar 23 11:41:16 conf_show: vt_service = 7777
>>>> Mon Mar 23 11:41:16 conf_show: mip6_entity = 2
>>>> Mon Mar 23 11:41:16 conf_show: debug_level = 10
>>>> Mon Mar 23 11:41:16 conf_show: debug_log_file = stderr
>>>> Mon Mar 23 11:41:16 conf_show: PolicyModulePath = [internal]
>>>> Mon Mar 23 11:41:16 conf_show: DefaultBindingAclPolicy = 0
>>>> Mon Mar 23 11:41:16 conf_show: NonVolatileBindingCache = disabled
>>>> Mon Mar 23 11:41:16 conf_show: KeyMngMobCapability = disabled
>>>> Mon Mar 23 11:41:16 conf_show: UseMnHaIPsec = disabled
>>>> Mon Mar 23 11:41:16 conf_show: MnMaxHaBindingLife = 262140
>>>> Mon Mar 23 11:41:16 conf_show: MnMaxCnBindingLife = 420
>>>> Mon Mar 23 11:41:16 conf_show: MnRouterProbes = 0
>>>> Mon Mar 23 11:41:16 conf_show: MnRouterProbeTimeout = 0.000000
>>>> Mon Mar 23 11:41:16 conf_show: InitialBindackTimeoutFirstReg = 1.500000
>>>> Mon Mar 23 11:41:16 conf_show: InitialBindackTimeoutReReg = 1.000000
>>>> Mon Mar 23 11:41:16 conf_show: UseCnBuAck = disabled
>>>> Mon Mar 23 11:41:16 conf_show: DoRouteOptimizationMN = enabled
>>>> Mon Mar 23 11:41:16 conf_show: MnUseAllInterfaces = disabled
>>>> Mon Mar 23 11:41:16 conf_show: MnDiscardHaParamProb = disabled
>>>> Mon Mar 23 11:41:16 conf_show: SendMobPfxSols = enabled
>>>> Mon Mar 23 11:41:16 conf_show: OptimisticHandoff = disabled
>>>> Mon Mar 23 11:41:16 conf_show: MobRtrUseExplicitMode = enabled
>>>> Mon Mar 23 11:41:16 conf_show: SendMobPfxAdvs = enabled
>>>> Mon Mar 23 11:41:16 conf_show: SendUnsolMobPfxAdvs = enabled
>>>> Mon Mar 23 11:41:16 conf_show: MaxMobPfxAdvInterval = 86400
>>>> Mon Mar 23 11:41:16 conf_show: MinMobPfxAdvInterval = 600
>>>> Mon Mar 23 11:41:16 conf_show: HaMaxBindingLife = 262140
>>>> Mon Mar 23 11:41:16 conf_show: HaAcceptMobRtr = disabled
>>>> Mon Mar 23 11:41:16 conf_show: DoRouteOptimizationCN = disabled
>>>> Mon Mar 23 11:41:16 xfrm_cn_init: Adding policies and states for CN
>>>> Mon Mar 23 11:41:16 xfrm_ha_init: Adding policies and states for HA
>>>> Mon Mar 23 11:41:16 ha_if_addr_setup: Joined anycast group
>>>> 2a03:a0a:ffff:ffff:ffff:ffff:ffff:fffe on iface 3
>>>>
>>>>
>>>> iface 3 is correct since:
>>>> HA:~# ip link
>>>> ........
>>>> 3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
>>>> state UNKNOWN qlen 1000
>>>> link/ether 08:00:27:99:49:45 brd ff:ff:ff:ff:ff:ff
>>>>
>>>> tcpdump on HA gives:
>>>> HA:~# tcpdump -vvv -i eth0 -s 200 host yyyy:yyyy::1
>>>> tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size
>>>> 200
>>>> bytes
>>>>
>>>> 11:50:33.221717 IP6 (hlim 64, next-header IPv6 (41) payload length:
>>>> 72) xxxx:xxxx::13 > yyyy:yyyy::1: IP6 (hlim 64, next-header Mobility
>>>> (135) payload length: 32) yyyy:yyyy:0:1300::1 > yyyy:yyyy::1:
>>>> mobility: BU seq#=26817 AH lifetime=262140(padn)(alt-CoA:
>>>> xxxx:xxxx::13)
>>>>
>>>> 11:50:33.319495 IP6 (hlim 64, next-header ICMPv6 (58) payload length:
>>>> 120) yyyy:yyyy::1 > xxxx:xxxx::13: [icmp6 sum ok] ICMP6, destination
>>>> unreachable, length 120, unreachable port[|icmp6]
>>>>
>>>> radvd is running on HA with the following config:
>>>> interface eth0
>>>> {
>>>> AdvSendAdvert on;
>>>> MinRtrAdvInterval 3;
>>>> MaxRtrAdvInterval 10;
>>>> AdvIntervalOpt on;
>>>> AdvHomeAgentFlag on;
>>>> AdvHomeAgentInfo on;
>>>> HomeAgentLifetime 1800;
>>>> HomeAgentPreference 10;
>>>> AdvMobRtrSupportFlag off;
>>>> prefix xxxx:xxxx::1/32
>>>> {
>>>> AdvRouterAddr on;
>>>> AdvOnLink on;
>>>> AdvAutonomous off;
>>>> };
>>>> };
>>>>
>>>> I have tried with prefix xxxx:xxxx::1/64 and AdvAutonomous on but the
>>>> result is still the same. And yes, radvd was restarted after mip6d was
>>>> started.
>>>>
>>>> I assume that the BU's reach the HA but doesn't reach mip6d running on
>>>> it since the icmp code says "unreachable port". Correct?
>>>> What can cause it?
>>>>
>>>> I've also tried with a recompiled debian 5.0 kernel and mip6d from
>>>> natisbad.org with the same result.
>>>>
>>>> BR,
>>>> Mattias
>>>> _______________________________________________
>>>> Support mailing list
>>>> Support at ml.nautilus6.org
>>>> http://ml.nautilus6.org/mailman/listinfo/support
>>>>
>>>
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