xadhoom left a comment (kamailio/kamailio#4301)
Attached.
The network scheme is the following:
client -> edge proxy (with topos) -> "worker" proxy -> freeswitch
Even the b2bua says "202 Accepted", it fails since the refer-to header points to nowhere (another call is placed by FS which then fails).
[topos_refer_to.pcap.gz](https://github.com/user-attachments/files/21032411/topos_refer_to.pcap.gz)