### Description Kamailio receives call and changes originating number to anonymous using uac_replace_from() with auto restore and password. Info is stored in vsf parameter of Record-Route Original From Uri is sip:123456789@1.1.1.1:5060 New From Uri is "sip:anonymous@anonymous.invalid" When originating IP sends an ACK after the 200 OK, it sends a different IP on the From header From Uri received on the ACK sent to Kamailio : sip:123456789@2.2.2.2:5070 From Uri sent by kamailio after restore : sip:anonymous@bnlnzmlu4s.hnv2a'_lid The Uri sent by Kamailio is variable and it's not always the same. #### Reproduction I've annexed to this issue two call XMS (Outgoing and Incoming) that creates this scenario. Kamailio is configured to change the From URI to sip:anonymous@anonymous.invalid with uac_replace_from() with auto restore and password ### Additional Information version: kamailio 5.2.1 (x86_64/linux) 947769 flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 16MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: 947769 compiled on 11:41:21 Apr 5 2022 with gcc 4.8.5 * **Operating System**: CentOS 7 ``` [Originating_XML.txt](https://github.com/kamailio/kamailio/files/11898066/Or… [Terminating_XML.txt](https://github.com/kamailio/kamailio/files/11898067/Te… -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3498 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3498(a)github.com>