On Wed, 17 Apr 2019 08:37:20 +0200 Kevin DAGNEAUX <kevin.dagne...@fiitelcom.fr> wrote:
> > > Hi, > > > > I've been bedeviled by this question for a while, but have been unable > > to figure out a clean, non-hackish solution. It may be an XY problem ... > > > > I have a system (laptop, running Debian) that is sometimes connected > > directly to my LAN, and sometimes connected via VPN (wireguard, to the > > local router, running OpenWrt). The LAN is 192.168.0.0/24, with the > > laptop having a fixed, static address in that range (although I'm > > certainly open to using DHCP, possibly with a fixed address > > reservation). The VPN is 10.0.0.0/24, with the laptop getting a fixed, > > static address in that range (and wireguard apparently doesn't work > > with dhcp). > > > > I currently have an entry in /etc/hosts on the various LAN hosts > > assigning a hostname to the laptop's fixed local address, and the LAN > > hosts can access the laptop via that hostname. [I could alternatively > > use dnsmasq, which is running on the router regardless.] This obviously > > doesn't work when the laptop is connected via VPN. [The laptop can > > access the LAN hosts fine via their hostnames, so I seem to have the > > routing correctly configured on the laptop and the router.] > > > > What I seem to want (but maybe XY?) is some way to adjust the host > > files (or dnsmasq's information) so that the hostname will resolve to > > the LAN address when the laptop is connected to the LAN, and the VPN > > address when it's connected via VPN. If everything was using DHCP, this > > would be straightforward enough, but as I said, the VPN apparently > > needs to be configured statically, and not via DHCP. I could obviously > > use some custom script (using, say, ageas, to modify host files) but > > this seems hackish. What is a standard, 'correct' way to do this, or > > more generally, to enable the LAN hosts to access the laptop > > seamlessly regardless of its IP address and connection type? > > > > Celejar > > > Hi, > > A possible solution is to use a bridged VPN, in this case, your laptop > will always have the same IP. Thanks. I can't seem to find much information about this - can you elaborate, or point me to a link? [I'm not a networking expert.] Currently, my LAN is 192.168.0.0/24, which is also the addressing scheme of some of the networks out of my control that I'm setting up a VPN link from. I deliberately used 10.0.0.0/24 for the VPN to avoid address collisions with these other networks. It did occur to me to consider using a different address space, for the VPN or perhaps for the whole home LAN, but I'd rather not take that step just to solve what seems a relatively simple problem unless absolutely necessary Celejar
