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### Description
<!-- Explain what you did, what you expected to happen, and what actually happened. -->
### Expected behavior
#### Actual observed behavior
#### Debugging Data
``` modparam("dispatcher", "db_url", "mysql://xxxxxxxx/kamailio") modparam("dispatcher", "table_name", "dispatcher") #modparam("dispatcher", "flags", 2) modparam("dispatcher", "ds_probing_mode", 1) modparam("dispatcher", "ds_ping_method", "OPTIONS") modparam("dispatcher", "ds_ping_interval", 3) modparam("dispatcher", "ds_probing_threshold", 1) modparam("dispatcher", "ds_inactive_threshold", 2) modparam("dispatcher", "ds_timer_mode", 1)
```
#### Log Messages
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``` When the back-end gateway is unreachable, run kamctl dispatcher dump to check the flag status of the corresponding gateway. It takes 30 seconds for the flag to change to IP. However, according to my configuration file, ping every three seconds and ping every time fails is changed to inactive,who can help me?Thanks!
"SET": { "ID": 1000, "TARGETS": [{ "DEST": { "URI": "sip:xxxxxx:port", "FLAGS": "AP", "PRIORITY": 0, "ATTRS": { "BODY": "weight=100;sockname=zhuanxian;", "DUID": null, "MAXLOAD": 0, "WEIGHT": 100, "RWEIGHT": 0, "SOCKET": null, "SOCKNAME": "zhuanxian", "OBPROXY": null } } ```
#### SIP Traffic
<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->
``` (paste your sip traffic here) ```
### Possible Solutions
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
``` version: kamailio 5.6.2 (x86_64/linux) e292ba flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, 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_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: e292ba compiled on 10:52:18 May 8 2023 with gcc 10.2.1 ```
* **Operating System**:
<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) -->
``` Linux HUIJIE-Kamailio-SBC01 5.10.0-22-amd64 #1 SMP Debian 5.10.178-3 (2023-04-22) x86_64 GNU/Linux ```
Likely it is about tm module final retransmission timeout.
Closing here as it is not a report about a bug in the C code. For discussing further, use sr-users@lists.kamailio.org mailing list.
Closed #3446 as completed.