I've recently been experiencing some problems with one of my IPv6 leases disappearing off clients after some time, both with DHCPv6 (Windows client) and SLAAC (Android). Interestingly it's happening on a specific IPv6 prefix but not another as I'm multihomed. Based on the documentation odhcpd is the default application that handles this.
I was reading an interesting article here: https://blog.hansenpartnership.com/creating-a-home-ipv6-network/ that talks about disabling odhcpd entirely and instead using dnsmasq for IPv6 and RAs. I already use dnsmasq-full for ipset, what are people's experience with using dnsmasq for DHCPv6 and SLAAC? Does this integrate with LuCI and the OpenWrt config files in a similar way to odhcpd as a drop in replacement?
odhcpd seems to have worked fine up until more recently but losing a IPv6 address lease on multiple clients seems to indicate there's a configuration issue or specific issue somewhere, I was however interested in learning you could use dnsmasq alone, which I was going to potentially test to see if it resolves the issue, as I haven't really got much to go on, other than going back to an older OpenWrt build to see if it's a regression.