DNS assign for L2TP/IPSEC... bug?

johnsilver · August 10, 2015, 2:14pm

Hi.

When i set DNS server (in PPP → Profiles) L2TP connection can’t be established. When i clear DNS server parameter then i can connect. Is it normal behavior?

In L2TP logs from router i can see that client in first case asked for ms-dns parameters and didn’t get it and then trying again multiple times and then stopped with error “No network protocols running”. In second case ms-dns parameter recieved router’s ip as ms-dns parameter and second ms-dns from IP → DNS.

So i can’t set my dns server in PPP profile. Is it normal behavior?

johnsilver · August 10, 2015, 2:34pm

Here is screenshot with ConfReq/ConfAck/ConfRef

johnsilver · August 11, 2015, 6:29am

So i guess this is a bug. If i put two DNS servers in PPP profile than everything works OK. If one then no connection at all.

SN2015 · August 11, 2015, 8:29am

L2tp over IPsec will not be able to receive DNS suffix.

johnsilver · August 13, 2015, 7:53am

Yes, I know. Thank you.

The bug described here fixed in 6.30.2 firmware upgrade.

What’s new in 6.30.2 (2015-Jul-22 11:17):

*) pptp & l2tp - fixed problem where android client could not connect if
both dns names were not provided (was broken since v6.30);