No -- in 'normal' mode it works well. The ACK's are correct. Everything is working as expected

trace uploaded:
http://www.pcapr.net/view/mario.schroet ... .pcap.html

1. Brekeke Product Name and version: SIP Server 2.37.4 2. Java version: 3. OS type and the version: 4. UA (phone), gateway or other hardware/software involved: 5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html : 6. Your problem: The ACK for a RE_INVITE ...

Bug ? - feature? --- it's a bug for sure---guess it's just a bad configuration

The register already contains the 'SIP/2.0/UDP' . So the server just returned this entry.

1. Brekeke Product Name and version: Brekeke SIP Server , Version 2.2.1.1 Evaluation 2. Java version: 1.6 3. OS type and the version: WinXP 4. UA (phone), gateway or other hardware/software involved: own hardware/M5T sip stack 5. Select your network pattern from http://www.brekeke-sip.com/bbs ...