On Thu, May 04, 2023 at 12:09:25PM +0200, Michel Verdier wrote: > Le 4 mai 2023 Michel Verdier a écrit : > > > with a stanse like > > > > auto enp1s0... > > sysctl net/ipv6/conf/default/accept_ra = 1 > > I mean > > sysctl net.ipv6.conf.enp1s0.accept_ra = 1 And it goes in the "iface" stanza, not the "auto" one, just in case that wasn't clear to the OP.