ipv4_dns="192.168.67.2"
ipv6_dns="2a03:b0c0:2:d0::2a5:f002/128"
ipv4_dn42="192.168.67.4"
ipv6_dn42="2a03:b0c0:2:d0:1::3"
ipv4_mail="192.168.67.1"
ipv6_mail="2a03:b0c0:2:d0:1::1"