ipv6 with KVM on debian
- by Eliasdx
I have trouble setting up IPV6 on my Proxmox (KVM) server:
My ISP sent me this information(xxx=placeholder):
IPs: 2a01:XXX:XXX:301:: /64
Gateway: 2a01:XXX:XXX:300::1 /59
This is the interface setup on the host server:
auto vmbr1
iface vmbr1 inet static
address 178.XX.XX.4
broadcast 178.XX.XX.63
netmask 255.255.255.192
pointopoint 178.XX.XX.1
gateway 178.XX.XX.1
bridge_ports eth0
bridge_stp off
bridge_fd 0
iface vmbr1 inet6 static
address 2a01:XXX:XXX:301::2
netmask 64
up ip -6 route add 2a01:XXX:XXX:300::1 dev vmbr1
down ip -6 route del 2a01:XXX:XXX:300::1 dev vmbr1
up ip -6 route add default via 2a01:XXX:XXX:300::1 dev vmbr1
down ip -6 route del default via 2a01:XXX:XXX:300::1 dev vmbr1
On the guest:
auto eth0
iface eth0 inet static
address 178.xx.xx.47
netmask 255.255.255.255
broadcast 178.xx.xx.63
gateway 178.xx.xx.1
pointopoint 178.xx.xx.1
iface eth0 inet6 static
pre-up modprobe ipv6
address 2a01:XXX:XXX:301::2:2
netmask 64
up ip -6 route add 2a01:XXX:XXX:300::1 dev eth0
down ip -6 route del 2a01:XXX:XXX:300::1 dev eth0
up ip -6 route add default via 2a01:XXX:XXX:300::1 dev eth0
down ip -6 route del default via 2a01:XXX:XXX:300::1 dev eth0
Ipv4 works on both host and guest but Ipv6 only works "sometimes". It's up for minutes and then down again until I change something.
However I can actually ping the host and the guest from both host and guest.
host:~# ip -6 neigh
2a01:XXX:XXX:301::100:2 dev vmbr1 lladdr 00:50:56:00:00:e0 REACHABLE
2a01:XXX:XXX:300::1 dev vmbr1 lladdr 00:26:88:76:18:18 router STALE
host:~# ip -6 route
2a01:XXX:XXX:300::1 dev vmbr1 metric 1024 mtu 1500 advmss 1440 hoplimit 4294967295
2a01:XXX:XXX:301::/64 dev vmbr1 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev vmbr0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev vmbr1 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev tap101i1d0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295
default via 2a01:XXX:XXX:300::1 dev vmbr1 metric 1024 mtu 1500 advmss 1440 hoplimit 4294967295
Does someone know why it isn't working? And is there a way to configure multiple v6 IPs from the same subnet so I can dedicate IPs to websites on a server with multiple virtualhosts?
