sysctl interface settings

This example configures sysctl interface settings:

  • enable ip forwarding for all interfaces
  • ignore ipv6 router advertisments by default
  • accept ipv6 router advertisments on eth0 and generate a private ipv6 address
  • configure a static ipv6 address on eth1
sysctl:
  all:
    ipv6:
      forwarding: 1
interfaces:
  eth0:
    link:
      kind: physical
      state: up
    sysctl:
      ipv6:
        accept_ra: 2
        addr_gen_mode: 3
  eth1:
    addresses:
    - 2001:db8::defa/64
    link:
      kind: physical
      state: up

{
  networking.ifstate = {
    enable = true;
    settings = {
      sysctl.all.ipv6.forwarding = 1;
      interfaces = {
        eth0 = {
          link = {
            kind = "physical";
            state = "up";
          };
          sysctl.ipv6 = {
            accept_ra = 2;
            addr_gen_mode = 3;
          };
        };
        eth1 = {
          addresses = [ "2001:db8::defa/64" ];
          link = {
            kind = "physical";
            state = "up";
          };
        };
      };
    };
  };
}

sysctl net.ipv6.conf.all.forwarding=1
sysctl net.ipv6.conf.eth0.accept_ra=2
sysctl net.ipv6.conf.eth0.addr_gen_mode=3

ip address add 2001:db8::defa/64 dev eth1
ip set link dev eth0 up
ip set link dev eth1 up