sem32 created an issue (kamailio/kamailio#4325)
### Description
The issue: in 15 second after start of kamailio, it stops to read the UDP socket localhost:5060
### Troubleshooting
<img width="683" height="406" alt="Image" src="https://github.com/user-attachments/assets/b93ed7d3-8944-477b-867b-ca7fcae832f3" />
#### Reproduction
Preconditions: - More than one worker for UDP localhost:5060 - Kamailio receives SIP OPTION from the Asterisk by UDP localhost - In the Kamailio's script we have a logic to send the SIP OPTION by TLS. We modify $ru and add to it ";transport=TLS" - 25+ sip trunks which generates SIP OPTIONS with transport TLS - all the trunks are resolvable but not reachable (don't listen the port) - libssl3
#### Debugging Data
[gdb_239054.txt](https://github.com/user-attachments/files/21236064/gdb_239054.txt) [gdb_239053.txt](https://github.com/user-attachments/files/21236065/gdb_239053.txt)
### Possible Solutions
We have no issue in case we have: - only one worker for UPD localhost and any version of libssl (libssl3 or libss1.1) - or use libssl1.1 and any amount of workers
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
``` # kamailio -v version: kamailio 5.8.6 (aarch64/linux) a14e49 flags: , EXTRA_DEBUGUSE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT-NOSMP, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_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: a14e49 compiled on 14:10:21 Jul 15 2025 with gcc 12.2.0 ```
* **Operating System**:
``` # lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 12 (bookworm) Release: 12 Codename: bookworm
# uname -a Linux semen02 6.1.0-37-cloud-arm64 #1 SMP Debian 6.1.140-1 (2025-05-22) aarch64 GNU/Linux ```