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lacibsd
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L2TP user1 disconnect when user2 connects

Thu Dec 26, 2019 5:16 pm

I have L2TP via IPSec connection setup running on 6.46 (stable)
Scenario: user1 is connected, everything is good, as soon as user2 connects user1 can't reach the gateway and after ~1 minute gets disconnected.
user1 and user2 receives different IP's, I haven't seen errors in l2tp, ppp and route logs.
Any other ideas?
 
Njumaen
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Re: L2TP user1 disconnect when user2 connects

Sun Dec 29, 2019 10:08 am

Do both users come from the same (public) IP? Then this is normal. IPSec cannot distinguish them.

Try one from a different IP, for example via WIFI tethering from your mobile phone.
 
lacibsd
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Re: L2TP user1 disconnect when user2 connects

Sun Dec 29, 2019 6:51 pm

Thank you Njumaen!
I didn't know about this issue with IPsec and same source IP, however I did try connecting from cellular and Wi-Fi, I had the same issue.
Then changed the DHCP pool assigned to L2TP to another one, with the new pool I don't have the multiple user/one connection working only issue anymore. I was looking for any miss-configuration with the old pool but didn't find any