Le 4 mai 2023 Greg Wooledge a écrit : > A guess: perhaps this parameter cannot be set during the initial boot, > because the enp1s0 interface isn't in a working state yet. Yes setting parameter on interface is better done in /etc/network/interfaces or /etc/network/interfaces.d/* which is used when the interface is configured with a stanse like auto enp1s0... sysctl net/ipv6/conf/default/accept_ra = 1