sergey-safarov created an issue (kamailio/kamailio#4212)
### Description
When I add a new dispatcher target using the kamcmd command, then kamailio does
not start send OPTIONS.
#### Reproduction
Need to start Kamailio with config file
```
listen=eth0
loadmodule "xlog.so"
loadmodule "pv.so"
loadmodule "ctl.so"
loadmodule "jsonrpcs.so"
loadmodule "dispatcher.so"
modparam("dispatcher", "list_file", "/dev/null")
route{
xerr("TEST $ci\n");
drop;
}
```
And then execute comands
```
kamcmd dispatcher.add 1 "sip:sip.telnyx.com:5060;transport=tcp" 8
kamcmd dispatcher.list
```
After the last command expected output
```
{
NRSETS: 1
RECORDS: {
SET: {
ID: 1
TARGETS: {
DEST: {
URI:
sip:sip.telnyx.com:5060;transport=tcp
FLAGS: AP
PRIORITY: 0
}
}
}
}
}
```
As you can see, the target has `AP` flags, which means the target is active and
probing enabled.
But no OPTIONS messages were sent.
#### Log Messages
Here is kamailio debug output for during kamcmd execitions and some time after
```
12(94363) DEBUG: ctl [../../core/io_wait.h:368]: io_watch_add(): processing
io_watch_add(0x7fce67ac03a0, 10, 3, 0x21186bf0) - fd_no=1
12(94363) DEBUG: ctl [io_listener.c:440]: handle_new_connect(): new connection
(1) on /var/run/kamailio//kamailio_ctl
12(94363) DEBUG: ctl [io_listener.c:501]: handle_stream_read(): bytes read: 68
12(94363) DEBUG: <core> [core/dns_cache.c:533]: _dns_hash_find():
(sip.telnyx.com(14), 1), h=507
12(94363) DEBUG: <core> [core/resolve.c:1021]: get_record(): skipping 0 NS
(p=0x9c6ad0, end=0x9c6ad0)
12(94363) DEBUG: <core> [core/resolve.c:1035]: get_record(): parsing 0 ARs
(p=0x9c6ad0, end=0x9c6ad0)
12(94363) DEBUG: <core> [core/dns_cache.c:1699]: dns_get_related():
(0x7fce63a32000 (sip.telnyx.com, 1), 1, *(nil)) (0)
12(94363) DEBUG: <core> [core/dns_cache.c:1702]: dns_get_related(): record not
alone: 0x7fce63a32000 - type: 1
12(94363) DEBUG: <core> [core/dns_cache.c:748]: dns_cache_add_unsafe(): adding
sip.telnyx.com(14) 1 (flags=0) at 507
12(94363) DEBUG: dispatcher [dispatch.c:768]: add_dest2list(): dest [1/1]
<sip:sip.telnyx.com:5060;transport=tcp>
12(94363) DEBUG: dispatcher [dispatch.c:258]: ds_log_dst_cb(): dst>> 1
sip:sip.telnyx.com:5060;transport=tcp 8 0 (,0,0,0)
12(94363) DEBUG: ctl [io_listener.c:522]: handle_stream_read(): bytes
processed: 68
12(94363) DEBUG: ctl [io_listener.c:498]: handle_stream_read(): handle_stream
read: eof on /var/run/kamailio//kamailio_ctl
12(94363) DEBUG: ctl [../../core/io_wait.h:599]: io_watch_del(): DBG:
io_watch_del (0x7fce67ac03a0, 10, -1, 0x10) fd_no=2 called
12(94363) DEBUG: ctl [../../core/io_wait.h:368]: io_watch_add(): processing
io_watch_add(0x7fce67ac03a0, 10, 3, 0x21186bf0) - fd_no=1
12(94363) DEBUG: ctl [io_listener.c:440]: handle_new_connect(): new connection
(1) on /var/run/kamailio//kamailio_ctl
12(94363) DEBUG: ctl [io_listener.c:501]: handle_stream_read(): bytes read: 25
12(94363) DEBUG: ctl [io_listener.c:522]: handle_stream_read(): bytes
processed: 25
12(94363) DEBUG: ctl [io_listener.c:498]: handle_stream_read(): handle_stream
read: eof on /var/run/kamailio//kamailio_ctl
12(94363) DEBUG: ctl [../../core/io_wait.h:599]: io_watch_del(): DBG:
io_watch_del (0x7fce67ac03a0, 10, -1, 0x10) fd_no=2 called
```
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 6.0.1 (x86_64/linux) fce50d
flags: USE_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,
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_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: fce50d
compiled on 00:00:00 Sep 13 2022 with gcc 14.2.1
```
* **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 `lsb_release -a` and `uname -a`)
-->
```
root@nout:~# cat /etc/os-release
NAME="Fedora Linux"
VERSION="41 (Workstation Edition)"
RELEASE_TYPE=stable
ID=fedora
VERSION_ID=41
VERSION_CODENAME=""
PLATFORM_ID="platform:f41"
PRETTY_NAME="Fedora Linux 41 (Workstation Edition)"
ANSI_COLOR="0;38;2;60;110;180"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:41"
DEFAULT_HOSTNAME="fedora"
HOME_URL="https://fedoraproject.org/";
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f41/system-administrators-guide/";
SUPPORT_URL="https://ask.fedoraproject.org/";
BUG_REPORT_URL="https://bugzilla.redhat.com/";
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=41
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=41
SUPPORT_END=2025-12-15
VARIANT="Workstation Edition"
VARIANT_ID=workstation
```
--
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