Hi everyone,

I am currently working with sip.js and freeswitch which is currently connecting to our freeswitch via the our internal network.
Looking at the registration I am seeing that the contact show fs_nat= yes. Here the registration from the server.

Call-ID:        6ctjv10kv92d3eft9i6lc7

User:           01234678@example.com

Contact:        "01234678" <sip:01234678@example.com;transport=ws;fs_nat=yes;fs_path=sip%3A01234678%4010.128.130.129%3A51786%3Btransport%3Dwss>

Agent:          SIP.js/0.15.10

Status:         Registered(WSS-NAT)(unknown) EXP(2021-02-11 13:10:07) EXPSECS(658)

Ping-Status:    Reachable

Ping-Time:      0.00

Host:           example

IP:             10.128.130.129

Port:           51786

Auth-User:      unknown

Auth-Realm:     example.com

MWI-Account:    01234678@example.com

Nat detection is disabled for the freeswitch and a normal snom phone registering to the server does not show the fs_nat=yes
Does freeswitch always detect nat for webrtc connections? Or is there possibly something wrong in my configuration?

Kind Regards,

Max