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22.7 Legacy Series / IPV6 and Comcast Xfinity setup questions
« on: October 26, 2022, 05:49:06 am »
I'm trying to setup opnsense with ipv6 enabled but im not sure i have it configured correctly. I dont have a typical setup, so it has been impossible to find any information that shows me how it should be setup. here is my configuration.
Cable modem Surfboard SB6183 Comcast/Xfinity is the provider.
OPNSense box itx i7 16gigs ram dual intel nics on board
2 Windows 2019 Servers one is the DHCP server and both are DNS servers
I have both ipv4 and ipv6 working it seems but i keeps getting wierd errors on the OPNSense box for taffic that it cannot route
"Cannot forward src fe08:2::..... , dst 2a05:d018:76c:b683:eeb7:8a44:964d:dc0f, nxt 6, rcvif em1, outif em0
I have ipv6 setup on the OPNSense box
LAN set to track interface
Track IPv6 Interface set to WAN and Manual configuration check to "Allow manual adjustment of DHCPv6 and Router Advertisements"
Wan set to DHCPv6
DHCPv6 client configuration
mode basic
Request only an IPv6 prefix checked
Prefix delegation size 64
Send IPv6 prefix hint checked
Use IPv4 connectivity checked
On the Windows servers I used the prefix provided and set static IPv6 Addresses using the prefix with ::2 and ::3 for each. The DNS servers are set to forward requests to Cloudflare I had to manually enter the IPv6 address of the OPNsense box in the default gateway field. This was the only way to get the servers to connect to the internet. This seemed really strange as they should from my understanding should have not needed a default gateway and RA should have provided this to them.
the DHCPv6 server was set to give out addresses for the prefix::0010 to prefix::ffff /64 I'm not entirely sure this is the correct way to handle this and where I am really questioning that I have things configured wrong.
If any one can help me out on this I would really appreciate it
Regards,
Jman
Cable modem Surfboard SB6183 Comcast/Xfinity is the provider.
OPNSense box itx i7 16gigs ram dual intel nics on board
2 Windows 2019 Servers one is the DHCP server and both are DNS servers
I have both ipv4 and ipv6 working it seems but i keeps getting wierd errors on the OPNSense box for taffic that it cannot route
"Cannot forward src fe08:2::..... , dst 2a05:d018:76c:b683:eeb7:8a44:964d:dc0f, nxt 6, rcvif em1, outif em0
I have ipv6 setup on the OPNSense box
LAN set to track interface
Track IPv6 Interface set to WAN and Manual configuration check to "Allow manual adjustment of DHCPv6 and Router Advertisements"
Wan set to DHCPv6
DHCPv6 client configuration
mode basic
Request only an IPv6 prefix checked
Prefix delegation size 64
Send IPv6 prefix hint checked
Use IPv4 connectivity checked
On the Windows servers I used the prefix provided and set static IPv6 Addresses using the prefix with ::2 and ::3 for each. The DNS servers are set to forward requests to Cloudflare I had to manually enter the IPv6 address of the OPNsense box in the default gateway field. This was the only way to get the servers to connect to the internet. This seemed really strange as they should from my understanding should have not needed a default gateway and RA should have provided this to them.
the DHCPv6 server was set to give out addresses for the prefix::0010 to prefix::ffff /64 I'm not entirely sure this is the correct way to handle this and where I am really questioning that I have things configured wrong.
If any one can help me out on this I would really appreciate it
Regards,
Jman