On Mon, Dec 02, 2024 at 10:29:31PM +0100, Christian Marangi wrote: > > Also I just notice msend suffer the very same problem... > > > > root@OpenWrt:~# ip vrf exec vlan1 msend -g ff2e::0102:0304 -I lan1 -c 1 > > Now sending to multicast group: [ff2e::0102:0304]:4444 > > sendto: Address family not supported by protocol > > root@OpenWrt:~# ip vrf exec vlan1 msend -I lan1 -c -g 1ff2e::0102:0304 > > Now sending to multicast group: [224.1.1.1]:4444 > > Sending msg 1, TTL 1, to [224.1.1.1]:4444: > > Sending msg 2, TTL 1, to [224.1.1.1]:4444: > > > > Ignore the last part about msend... just me messing around... As discussed privately, "Address family not supported by protocol" is an mtools bug introduced in v3.1. It has been fixed by Joachim today: https://github.com/troglobit/mtools/issues/8#issuecomment-2514087499 Please pull and test with mtools tag v3.2.