Hi,
I have an L2TP setup road warrior that has been working for months and suddenly stopped working
It's a pretty basic setup created in the PPP menu, in L2TP Server with a preshared key.
We haven't done any OS update nor any modifications to the configuration on the router side when this happened.
We are using macOS clients on the other side so there might have been some software updates done.
However I have the exact same setup (that I redid several times) which works on a different router (the one I use at home)
Also this router has a site-to-site tunnel using L2TP which still works well and this one hasn't suffered any interruption.
The other end of the tunnel has another mikrotik router on which I can connect using the same L2TP road warrior setup.
That's my only so far to access the network is to connect to the other end which routes me to my main network.
In the logs, the only error messages that I can see are the following:
08:42:54 ipsec,error no suitable proposal found.
08:42:54 ipsec,error 171.6.238.18 failed to get valid proposal.
08:42:54 ipsec,error 171.6.238.18 failed to pre-process ph1 packet (side: 1, status 1).
08:42:54 ipsec,error 171.6.238.18 phase1 negotiation failed.
I am wondering why I would have to change the proposals setup since this is working on the other router with the exact same basic setup.
I am thinking there is something wrong with the config or router itself and I already did a backup, reset the config then restore the backup but no cigar.
Ticket was created but the support replies once every 2 days and so far hasn't been able to find a solution to the point they even stop answering me...