27 May
2021
27 May
'21
8:51 p.m.
You can see
```
REGISTER sip:voip.domain.com SIP/2.0.
Via: SIP/2.0/UDP 32.1.128.4:45417;rport;branch=z9hG4bKPjZ5fpsipsncRX35bosd-juQhhswwf2n.t.
Max-Forwards: 70.
From: <sip:83@voip.domain.com>;tag=zMJ4EsFF8lnLBuDCWxk52XJgy84zU180.
To: <sip:83@voip.domain.com>.
Call-ID: qlKuZzPgK8dIzwwwpRRsP8yNr3xpWzzE.
CSeq: 54489 REGISTER.
User-Agent: ABTO VoIP SDK.
```
These messages send not by `Kamailio`.
This message send by "ABTO VoIP SDK".
You need to check "ABTO VoIP SDK" provider to config manage difference with
IPv6/IPv4 address when used TCP/UDP transport.
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Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/2742#issuecomment-849861775