Hi,
I am a little bit of a beginner when it comes to the IPv6 protocol and the way Proxmox/linux handles it. For context, we run a mail server on a guest inside a Proxmox box (bare-metal at a web farm). Everything IPv4 is configured and works great. Recently however, a client's MS Exchange box started sending out emails from an IPv6 address and our guest mail server is not receiving them. Nothing shows up in the mail logs.
So we started debugging:
On the Proxmox Host:
routes appropriately and returns packets.
On the Mail Server Guest:
times out.
So we started with the obvious and opened the firewall set disable_ipv6 to 0 ( net.ipv6.conf.all.disable_ipv6 in /etc/sysctl.conf). Restarted the guest box.
Still nothing.
My question is then:
Does the guest need an IPv6 address configured to receive/send IPv6 content? I made the assumption that the network would translate IPv6 request to IPv4, but I might be way off here.
My hosting supplier has supplied IPv6 addresses so I could start configuring those, but i was hopping for an easy routing solution so as to not break the current setup.
What do you guys/girls think?
I am a little bit of a beginner when it comes to the IPv6 protocol and the way Proxmox/linux handles it. For context, we run a mail server on a guest inside a Proxmox box (bare-metal at a web farm). Everything IPv4 is configured and works great. Recently however, a client's MS Exchange box started sending out emails from an IPv6 address and our guest mail server is not receiving them. Nothing shows up in the mail logs.
So we started debugging:
On the Proxmox Host:
Code:
ping6 2001:4860:4860::8888On the Mail Server Guest:
Code:
ping6 2001:4860:4860::8888So we started with the obvious and opened the firewall set disable_ipv6 to 0 ( net.ipv6.conf.all.disable_ipv6 in /etc/sysctl.conf). Restarted the guest box.
Still nothing.
My question is then:
Does the guest need an IPv6 address configured to receive/send IPv6 content? I made the assumption that the network would translate IPv6 request to IPv4, but I might be way off here.
My hosting supplier has supplied IPv6 addresses so I could start configuring those, but i was hopping for an easy routing solution so as to not break the current setup.
What do you guys/girls think?