I intend to use systemd-nspawn for various services. Host is a Fedora 32 box. So far everything works except for IPv6 accessibility from outside my subnet. So I guess the configuration of the gateway is wrong. What I did: - on host in /etc/systemd/nspawn/test.nspawn: [Network] VirtualEthernet=yes MACVLAN=enp4s0 bridge=vbr6s0 - inside container test I find 2 interfaces: host0@if6 and mv-enp4s0@if2 as expected. Configuration in /etc/systemd/network/10-mv.network: [Match] name=mv-enp* [Network] DHCP=no DNS=10.10.10.1 IPv6AcceptRA=True [Address] Address=134.102.x.y/27 [Address] Address=2001:xxx:yyy:zzz::131/64 [Route] Gateway=2001:xxx:yyy:zzz::1 GatewayOnlink=yes [Route] Gateway=134.102.x.y GatewayOnlink=yes These results in: [...]# ip a 1: lo: .... 2: host0@if6: ... (internal network via bridge, works fine) 3: mv-enp4s0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 56:41:75:d2:3b:e8 brd ff:ff:ff:ff:ff:ff:ff link-netnsid 0 inet 134.102.x.y/27 brd 134.102.x.y scope global mv-enp4s0 valid_lft forever preferred_lft forever inet6 2001:xxx:yyy:zzz::131/0 scope global valid_lft forever preferred_lft forever inet6 fe80::5441:75ff:fed2:3be8/64 scope link valid_lft forever preferred_lft forever Via IPv4 everything works without problems. Via IPv6 I can connect to all machines within my subnet, but not beyond. I'm wondering about the /0 in the IPv6 address though. On the host, both IPv4 and IPv6 work fine. There the configuration is done by NetworkManager. The IPv6 gateway is configured using /etc/sysconfig/network-scripts/ifcfg-enp4s0 ... IPV6_DEFAULTGW="2001:xxx:yyy:zzz::1%enp4s0" … (The %enp4s0 part is required) Every hint greatly appreciated.