On 2018-07-27, Jungle Boogie <jungleboog...@gmail.com> wrote: > Hi All, > > Problem I want to solve: > I would like the tun interface to 'support' more than one host. Right now, > when > I setup a tun interface, it's only activated on the dest IP, regardless of the > netmask used. > > my /etc/hostname.tun0: > inet 192.168.40.10 255.255.255.0 192.168.40.1 > > A workaround I've done, is adding a route: > route add -inet 192.168.40.10/24 192.168.40.10 > > More info: > Wireguard is using tun0 on machine A; I would like machine B and machine C to > also access machine A, all on machine A's tun0 interface - without the need > for > additional tun interfaces. > > Fortunately the route trick above works. > > Question: > Is the route add the legitimate way to do this? Can tun support more than one > host, or is truly point-to-point?
tun is only point-to-point. As you've seen, once the p-p is created you can route other networks to the destination. Adding a route like this seems more like the right way to do it, rather than a trick. The non point-to-point equivalent of tun is tap (which acts like an ethernet device).
