For a few times now I've noticed Kamailio 5.2.3 dispatcher module looses view of setid destination and this system been up and running for 13 days:

root:~# kamcmd dispatcher.list | grep ash.tpgw.service

To work around it, we have to reload the module again:

root:~# kamcmd dispatcher.reload
root:~# kamcmd dispatcher.list | grep ash.tpgw.service
URI: sip:<some host>:5062
URI: sip:<some host>:5060
root:~#

Process been running for several days:

root:~# ps -elf | grep kam
0 S root 8484 6520 0 80 0 - 3714 pipe_w 16:04 pts/0 00:00:00 grep --color=auto kam
5 S kamailio 32086 1 0 80 0 - 214845 pause Jun17 ? 00:00:00 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32164 32086 0 80 0 - 233341 skb_wa Jun17 ? 00:00:02 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32165 32086 0 80 0 - 233342 skb_wa Jun17 ? 00:00:02 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32166 32086 0 80 0 - 233341 skb_wa Jun17 ? 00:00:02 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32167 32086 0 80 0 - 233341 skb_wa Jun17 ? 00:00:02 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32168 32086 0 80 0 - 214875 skb_wa Jun17 ? 00:00:00 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32169 32086 0 80 0 - 214875 skb_wa Jun17 ? 00:00:00 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio
1 S kamailio 32170 32086 0 80 0 - 214875 skb_wa Jun17 ? 00:00:00 /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -f /etc/kamailio/kamailio.cfg -m 512 -M 64 -u kamailio -g kamailio