4 ip link set dev $1 mtu 1400
5 ip addr add dev $1 192.168.123.3/24
6 ip addr add dev $1 fec0::3/64
8 # disable ICMP redirects as they don't work within the tunnel
9 echo 0 > /proc/sys/net/ipv4/conf/$1/send_redirects
10 echo 0 > /proc/sys/net/ipv4/conf/$1/accept_redirects