Cisco vpn with Core 2 2.6.5 kernel

[Brian Anderson]

Well, I did as you suggested and while it helps a bit, I still get 
random hangs on a tcp connection.  For example I use a source control 
management program called perforce and under large synchronizations it 
will just stop after about 30 files.  I kill the sync and start it up 
again and it picks up where it left of and gets a bit farther before 
hanging again.

Kind of annoying.  Looks like Cisco didn't really test this one.

David R. Fischer wrote:

> Your MTU should stay at 1500 for the primary eth0 device.  I had the 
> same issues that you are seeing (btw I ment 1359 sry) for some weird 
> reason under the 2.6 kernel the mtu automagicly drops.  Once you bump 
> your mtu back to 1500 when the vpnclient is active you will return to 
> 'normal' operation.
>
> Brian Anderson wrote:
>
>> Actually for me the MTU is changed to 1359 which is the same value on 
>> the VPN client running on FC1 with no problems.
>>
>> Brian Anderson wrote:
>>
>>> Could you explain this a bit more?
>>>
>>> I downloaded the 4.0.4a client and it builds and start for me on 
>>> fedora core 2 test 3, but it freezes up a strange times (large 
>>> listings from 'ls -l' or large amounts of output from a compile).  
>>> Would this MTU setting cause that?  What should the MTU be?
>>>
>>> On another note, has anyone noticed that the DNS lookup is strange 
>>> with this client.  Sometimes host lookup is fast, sometimes it takes 
>>> long time.  Perhaps the MTU problem again?
>>>
>>> -Brian
>>>
>>>
>>> David R. Fischer wrote:
>>>
>>>> On the Cisco client be sure to fix the MTU after you bring up the 
>>>> vpnclient connect command.  For some reason it changes the ETH0 MTU 
>>>> to 1389...
>>>>
>>>>
>>>> Mike Hogsett wrote:
>>>>
>>>>>  
>>>>>
>>>>>> I have searched high and low for a way to get the cisco vpn linux
>>>>>> version 4.0.3.Bk9 client to work with a 2.6.5 kernel.
>>>>>>
>>>>>> I have tried the deadlock patch from www.anomalistic.org but it
>>>>>> doesn't work for me.
>>>>>>
>>>>>> It worked great using a 2.4 kernel.
>>>>>>
>>>>>> Does anyone have any other ideas?
>>>>>>   
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Looks like vpnclient-linux-4.0.4.A-k9.tar.gz supports 2.6.
>>>>>
>>>>>> From the readme (which I had to submit a blood sample, retina 
>>>>>> scan, and
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> sign away my first born for) :
>>>>>
>>>>>
>>>>> Revision: Release 4.0.4.A
>>>>> Files:    vpnclient-linux-4.0.4.A-k9.tar.gz
>>>>>
>>>>> Resolved Issues
>>>>> ...
>>>>> CSCed72716 Linux vpnclient hangs with 2.6.2 and greater kernels.
>>>>> ...
>>>>>
>>>>>
>>>>>  
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>