Hi. On Fri, Nov 23, 2018 at 01:18:45PM +0100, tony wrote: > 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.
I'd check first that some other addresses from this /64 range are routed by your VPS provider. > 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. Yep. > Could some knowledgeable person please give me the equivalent contents > and where to put them for Debian Linux. Ad-hoc configuration: ### check this on your OS! # ip a d igb0 2001:db8:0:123::/64 # ip a a igb0 2001:db8:0:123::/65 ### ### re-assign the other aliases previously set under the /64 block # ip a a igb0 2001:db8:0:123::dead/128 # ip a a igb0 2001:db8:0:123::ea:beef/128 As for the persistent configuration, that depends on the contents of /etc/network/interfaces. Can be static (it's straightforward then), DHCPv6 (you won't be able to do the split) or RA (ditto). Reco