REGISTER malformed 400 Bad Request

I have two trixbox a version 1.2.2 (vmware) and a version 1.2.3

I cannot register with a proxy server on 1.2.3, i get this error “400 Bad Request”

I did a tcpdump port 5060 -A -p -q to view the REGISTER differences between the machines.

I noticed the 1.2.2 which is working fine has NO “From” registration. It is clean.

HOWEVER, the 1.2.3 box has a “From” and it is very oddly spaced. Could this be causing the Bad Request error? both server and machine are in the same network connected to the same switch.

==========================
F
rom:<sip:500304@172.16.13.19
03:54:41.937676 IP (tos 0x68, ttl 64, id 19279, offset 0, flags [DF], proto 17, length: 417) 172.16.13.8.5060 > 172.16.13.197.5060: UDP, length 389
…t.REGISTER sip:172.16.13.197 SIP/2.0

    Via: SIP/2.0/UDP 1

03:54:41.938594 IP (tos 0x0, ttl 64, id 50534, offset 0, flags [none], proto 17, length: 286) 172.16.13.197.5060 > 172.16.13.8.5060: UDP, length 258
…@.A{…
G.SIP/2.0 400 Bad Request
=========================== :open_mouth: