I am attempting to connect my LG Android 9 phone to 2011UiAS running 6.44.3. My final goal is to setup the Always Connected Setting, which only works on IPSEC.
I can connect with L2TP/IPSEC, but it disconnects on the Router side after about 30 seconds. The Phone still thinks it is connected, but the Router shows it is disconnected.
Here is what I have tried (with no success):
1. disabling DPD
2. PPTP works just fine
3 changing the profile to default (from default-encryption).
4. If I connect from my Windows 10 machine, it does not have an issue
5. changed the keepalive timeout setting in the L2TP Server
Reviewing the IP --> IPSEC --> Policies, I notice this difference in the Android vs. the Windows
Android does not have a Dest Port and the PH2 State is established and PH Count is 1
Windows does have a Dest POrt 1701 and the PH2 State is ready to send and PH Count is 2
You can see the logs below (public IP address removed):
jul/01 23:03:57 ipsec,info purging ISAKMP-SA A.B.C.D[500]<=>192.168.15.45[500] spi=0eacc81d1cbf41e4:8e63f669cd75638a.
jul/01 23:03:57 ipsec,info ISAKMP-SA deleted A.B.C.D[500]-192.168.15.45[500] spi:0eacc81d1cbf41e4:8e63f669cd75638a rekey:1
jul/01 23:03:57 ipsec,info respond new phase 1 (Identity Protection): A.B.C.D[500]<=>192.168.15.45[500]
jul/01 23:03:58 ipsec,info ISAKMP-SA established A.B.C.D[500]-192.168.15.45[500] spi:cd79d8e1c6c27b42:55f9ad45c3efc1ac
jul/01 23:03:59 l2tp,info first L2TP UDP packet received from 192.168.15.45
jul/01 23:04:00 l2tp,ppp,info,account ksaye logged in, 192.168.89.234
jul/01 23:04:00 l2tp,ppp,info <l2tp-ksaye-1>: authenticated
jul/01 23:04:00 interface,info <l2tp-ksaye-1> detect UNKNOWN
jul/01 23:04:00 l2tp,ppp,info <l2tp-ksaye-1>: connected
jul/01 23:04:06 interface,info <l2tp-ksaye-1> detect WAN
jul/01 23:05:23 l2tp,ppp,info <l2tp-ksaye-1>: terminating... - hungup
jul/01 23:05:23 l2tp,ppp,info,account ksaye logged out, 84 23364 49790 68 329
jul/01 23:05:23 l2tp,ppp,info <l2tp-ksaye-1>: disconnected
Trying to stay native Android client, what am I missing or has anyone seen and solve this?