Infinite leasetime

[lleachii]

DHCPv6 lease time not respected by some hosts

That leasetime is only for for IPv4 by default. It even mentions that in the DHCPv6 wiki: https://openwrt.org/docs/techref/odhcpd leasetime string 12h DHCPv4 address leasetime It seems you'd be looking for: ra_useleasetime bool 0 Use configured leasetime as limit for the preferred and valid lifetime of a prefix But, I noticed that is a boolean value...meaning, when enabled to 1, it will change from infinity; and will use the IPv4 leasetime value. Hope this helps.