Need help with ULA addressing scheme
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Hi, I'm trying to build an IPv6 ULA environment, but I'm having issues in understanding some of the basics.
I used https://cd34.com/rfc4193/ to generate a IPv6 address on my LAN interface. I assigned LAN the following v6 IP: fdd6:3807:b7da::15 the v4 IP is 192.8.192.15 so I tried to keep the same numbering so to speak.
It's static IPv6 address - fdd6:3807:b7da::15/48
I took care of disabling the "block private network option"
I enabled the DHCPv6 and the RA deamon, because I have SLAAC and stateful clients in my LAN. I took a blind guess in creating the range:
And I'm sending the RA as managed per choice:
As it stands today, a host in the LAN obtains the follow IPv6 address:
inet6 fdd6:3807:b7da:0:20c:29ff:fee7:c7d6 prefixlen 64 scopeid 0x0<global>In the routing table of the host, I don't see the result of the RA:
ip -6 route
unreachable ::/96 dev lo metric 1024 error -113
unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -113
unreachable 2002:a00::/24 dev lo metric 1024 error -113
unreachable 2002:7f00::/24 dev lo metric 1024 error -113
unreachable 2002:a9fe::/32 dev lo metric 1024 error -113
unreachable 2002:ac10::/28 dev lo metric 1024 error -113
unreachable 2002:c0a8::/32 dev lo metric 1024 error -113
unreachable 2002:e000::/19 dev lo metric 1024 error -113
unreachable 3ffe:ffff::/32 dev lo metric 1024 error -113
fdd6:3807:b7da::/64 dev FO proto kernel metric 256 expires 86396sec
fe80::/64 dev FO proto kernel metric 256
default via fe80::20c:29ff:fe27:7e2e dev FO proto ra metric 1024 expires 56sec hoplimit 64Content of the RA:
Judging by the ip 6 routing table my RA is not taken into account as the default route. Is there something I must change on my RA or on my device ? (centos 7.6)?
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To the ones that may have the same problem as me, I managed to go a little further. To allow incoming ICMPv6 ping messages I had to uncheck those two options on my interface:
I'm still having a problem with my Cisco SG250-26 which does not let some IPv6 packets passing through...