[strongSwan] VPN connection issue on changing port speed to 10 Mbps (from 1000 Mbps)

[Vinay Kalkoti]

When I restart the network service, I see the following message. eth2
interface speed is set to 10 Mbps and is causing the network problem.
I couldn't make much from the logs.

11[IKE] checking path 10.xx.xx.197[4500] - 128.221.252.65[4500]
11[NET] sending packet: from 10.xx.xx.197[4500] to 128.221.252.65[4500]
11[IKE] checking path 128.221.252.2[4500] - 128.221.252.2[4500]
11[NET] sending packet: from 128.221.252.2[4500] to 128.221.252.2[4500]
11[IKE] checking path 10.xx.xx.197[4500] - 10.xx.xx.207[4500]
11[NET] sending packet: from 10.xx.xx.197[4500] to 10.xx.xx.207[4500]
12[NET] received packet: from 10.xx.xx.207[4500] to 10.xx.xx.197[4500]
12[ENC] parsed INFORMATIONAL response 5 [ ]
05[KNL] fe80::215:17ff:xxxx:4409 appeared on eth2
05[KNL] 128.221.253.33 disappeared from eth0
05[KNL] fe80::215:17ff:xxxx:558a disappeared from eth0
05[KNL] interface eth0 deactivated
05[KNL] 128.221.252.2 disappeared from eth1
05[KNL] interface eth1 deactivated
05[KNL] 128.221.252.33 disappeared from eth2
05[KNL] fe80::215:17ff:fecc:4409 disappeared from eth2
05[KNL] interface eth2 deactivated
05[KNL] 10.xx.xx.197 disappeared from eth3
05[KNL] fe80::215:17ff:fecc:4408 disappeared from eth3
05[KNL] interface eth3 deactivated
13[IKE] requesting address change using MOBIKE
13[ENC] generating INFORMATIONAL request 6 [ N(NO_ADD_ADDR) ]
13[IKE] checking path 10.xx.xx.197[4500] - 10.xx.xx.207[4500]
13[NET] sending packet: from 10.xx.xx.197[4500] to 10.xx.xx.207[4500]
06[NET] error writing to socket: Invalid argument
14[IKE] requesting address change using MOBIKE
15[IKE] requesting address change using MOBIKE
05[KNL] interface eth0 activated
05[KNL] 128.221.253.33 appeared on eth0
16[IKE] requesting address change using MOBIKE
05[KNL] interface eth1 activated
05[KNL] 128.221.252.2 appeared on eth1
17[IKE] requesting address change using MOBIKE
05[KNL] interface eth2 activated
05[KNL] 128.221.252.33 appeared on eth2
08[IKE] requesting address change using MOBIKE
05[KNL] interface eth3 activated
05[KNL] 10.xx.xx.197 appeared on eth3
11[IKE] path probing attempt 1
11[IKE] checking path 10.xx.xx.197[4500] - 128.221.253.65[4500]
11[NET] sending packet: from 10.xx.xx.197[4500] to 128.221.253.65[4500]
11[IKE] checking path 10.xx.xx.197[4500] - 128.221.252.65[4500]
11[NET] sending packet: from 10.xx.xx.197[4500] to 128.221.252.65[4500]
11[IKE] checking path 128.221.252.2[4500] - 128.221.252.2[4500]
11[NET] sending packet: from 128.221.252.2[4500] to 128.221.252.2[4500]
11[IKE] checking path 10.xx.xx.197[4500] - 10.xx.xx.207[4500]
11[NET] sending packet: from 10.xx.xx.197[4500] to 10.xx.xx.207[4500]
12[NET] received packet: from 10.xx.xx.207[4500] to 10.xx.xx.197[4500]
12[ENC] parsed INFORMATIONAL response 6 [ ]
12[ENC] generating INFORMATIONAL request 7 [ N(ADD_4_ADDR)
N(ADD_4_ADDR) N(ADD_4_ADDR) ]
12[IKE] checking path 10.xx.xx.197[4500] - 128.221.253.65[4500]
12[NET] sending packet: from 10.xx.xx.197[4500] to 128.221.253.65[4500]
12[IKE] checking path 10.xx.xx.197[4500] - 128.221.252.65[4500]
12[NET] sending packet: from 10.xx.xx.197[4500] to 128.221.252.65[4500]
12[IKE] checking path 128.221.252.2[4500] - 128.221.252.2[4500]
12[NET] sending packet: from 128.221.252.2[4500] to 128.221.252.2[4500]
12[IKE] checking path 10.xx.xx.197[4500] - 10.xx.xx.207[4500]
12[NET] sending packet: from 10.xx.xx.197[4500] to 10.xx.xx.207[4500]
14[NET] received packet: from 10.xx.xx.207[4500] to 10.xx.xx.197[4500]
14[ENC] parsed INFORMATIONAL response 7 [ ]
05[KNL] fe80::215:17ff:fecc:4408 appeared on eth3
05[KNL] fe80::215:17ff:fec9:558a appeared on eth0
05[KNL] fe80::215:17ff:fecc:4409 appeared on eth2
05[KNL] 128.221.253.33 disappeared from eth0
05[KNL] fe80::215:17ff:fec9:558a disappeared from eth0
05[KNL] interface eth0 deactivated
05[KNL] 128.221.252.2 disappeared from eth1
05[KNL] interface eth1 deactivated
05[KNL] 128.221.252.33 disappeared from eth2
05[KNL] fe80::215:17ff:fecc:4409 disappeared from eth2
05[KNL] interface eth2 deactivated
05[KNL] 10.xx.xx.197 disappeared from eth3
05[KNL] fe80::215:17ff:fecc:4408 disappeared from eth3
05[KNL] interface eth3 deactivated
16[IKE] requesting address change using MOBIKE
16[ENC] generating INFORMATIONAL request 8 [ N(NO_ADD_ADDR) ]
16[IKE] checking path 10.xx.xx.197[4500]




On Thu, Jul 28, 2011 at 10:55 PM, Andreas Steffen
<andreas.steffen at strongswan.org> wrote:
> Hello Vinay,
>
> I'm not aware of any known bug. Does the interface go away
> during the speed change? Does the strongSwan log show any
> warnings that the interface disappeared and reappeared?
>
> BTW - strongSwan 4.2.17 is very ancient.
>
> Regards
>
> Andreas
>
> On 28.07.2011 19:20, Vinay Kalkoti wrote:
>> Hi,
>>
>> I am facing a problem with my VPN connection. When the port speed is
>> changed from 1000 Mbps to 10 Mbps, the remote systems connected
>> through VPN are not pinging.
>>
>> But, if the VPN is restarted, then ping succeeds. I am using
>> strongswan-4.2.17-1.
>>
>> I wanted to check if this is an expected behavior or is a bug (known)
>> in strongswan.
>>
>> Thanks,
>> Vinay
>
> ======================================================================
> Andreas Steffen                         andreas.steffen at strongswan.org
> strongSwan - the Linux VPN Solution!                www.strongswan.org
> Institute for Internet Technologies and Applications
> University of Applied Sciences Rapperswil
> CH-8640 Rapperswil (Switzerland)
> ===========================================================[ITA-HSR]==
>