DHCPv6 stops working after some time


I’ve noticed that DHCPv6 (over PPPoE) stops working after a day or two, the only thing I’ve noticed is the process below doesn’t exists after dhcp has failed, rebooting the router fixes the issue.

odhcp6c -s /lib/netifd/dhcpv6.script -Ntry -P56 -t120 pppoe-ppp35ip6

Starting that process manually fixes the issue. Restarting the interface from luci doesn’t help.

What’s spawning that process? Why it can stop running?