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openvpn over ipv6 /65




Hi,

I have a Stretch VPServer with a /64 netbloch, of which only the first 2
addresses are used. I've been struggling for some time to get the right
stanza to split that into two /65s, using the upper half for openvpn.

There are many 'quick config' tutorials on the web, but none seem to
suit my objectives, the most enlightened being
https://community.openvpn.net/openvpn/wiki/IPv6, but I'm tripping over
the stanza:

### check this on your OS!
# ifconfig igb0 inet6 2001:db8:0:123::/64 -alias
# ifconfig igb0 inet6 2001:db8:0:123::/65
###
### re-assign the other aliases previously set under the /64 block
# ifconfig igb0 inet6 2001:db8:0:123::dead/128 alias
# ifconfig igb0 inet6 2001:db8:0:123::ea:beef/128 alias
# ...

which seems to apply to FreeBSD.

Could some knowledgeable person please give me the equivalent contents
and where to put them for Debian Linux.

TIA, Tony