[support] Destination unreachable from HA on BU???

[Romain KUNTZ]

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
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