I have a Hetzner dedicated server with 1 ipv4 address and 1 ipv6 subnet. The aim is to run VPSs with ipv6s.
OS: AlmaLinux 8 + Virtualizor on it.
My ipv6 subnet:
2a01:4f8:171:1cd3:: / 64
Opened /etc/sysconfig/network-scripts/ifcfg-eth0 and (according to Hetzner's instruction added):
IPV6INIT=yes
IPV6ADDR=2a01:4f8:171:1cd3::/64
IPV6_DEFAULTGW=fe80::1
IPV6_DEFAULTDEV=eth0
In Virtualizor created an ip pool, ipv6 subnet and generated a bunch of ipv6s:
Created a vps (ubuntu 18.04), and everything looks fine:
ipv6s:
2a01:4f8:171:1cd3:abcd:11:02cd:d3e0
2a01:4f8:171:1cd3:abcd:11:06d1:7f33
Putty fails to connect to ipv6 (Network Error. Network Unreachable):
Ssh-ed into the whole server using its ipv4.
Ran: ip -6 addr
result:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: viifbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a01:4f8:171:1cd3::2/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::3497:85ff:fee2:c1ee/64 scope link
valid_lft forever preferred_lft forever
4: viifv1001: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UNKNOWN qlen 1000
inet6 fe80::fc16:3eff:fe34:ecaa/64 scope link
valid_lft forever preferred_lft forever
5: viifv1002: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UNKNOWN qlen 1000
inet6 fe80::fc16:3eff:fec7:81aa/64 scope link
valid_lft forever preferred_lft forever
--
then:
ip -6 addr show scope global
result:
4: viifbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a01:4f8:171:1cd3::2/64 scope global
valid_lft forever preferred_lft forever
--
ip addr | grep inet6
result:
inet6 ::1/128 scope host
inet6 2a01:4f8:171:1cd3::2/64 scope global
inet6 fe80::3497:85ff:fee2:c1ee/64 scope link
inet6 fe80::fc16:3eff:fe34:ecaa/64 scope link
inet6 fe80::fc16:3eff:fec7:81aa/64 scope link
--
sysctl net.ipv6.conf.all.forwarding=1
Result:
net.ipv6.conf.all.forwarding = 1
--
Shall I add those ipv6s individually like Hetzner says that optionally to the /etc/sysconfig/network-scripts/ifcfg-eth0 we can add ipv6s manually (separated each by space):
IPV6ADDR_SECONDARIES=<IPv6 Address>/<Prefix>
--
Tried ssh access from Vrtualizor's terminal > failed (SSh will only work if java is installed and enabled)
Enabled vnc on the 2nd > "failed to connect to server"
--
So stuck..
What I am missing?
Looking for direction and, hopefully, a solution. Thank you
Update 1
was
IPV6INIT=yes
IPV6ADDR=2a01:4f8:171:1cd3::/64
IPV6_DEFAULTGW=fe80::1
IPV6_DEFAULTDEV=eth0
testing (added '2' to IPV6ADDR, and added IPV6ADDR_SECONDARIES):
IPV6INIT=yes
IPV6ADDR=2a01:4f8:171:1cd3::2/64
IPV6_DEFAULTGW=fe80::1
IPV6_DEFAULTDEV=eth0
IPV6ADDR_SECONDARIES=2a01:4f8:171:1cd3::3 2a01:4f8:171:1cd3::4/64
