Packages: wireguard: default route doesn't come back after ifdown

Created on 17 Jul 2017 · 4Comments · Source: openwrt/packages

When configuring Wireguard with a default IPv4 route through the tunnel (0/0 in AllowedIPs), it overrides the existing "regular" default route. But when shutting down the wireguard interface, the "regular" default route is not reinstalled. As as result, the system has no default route anymore.

@danrl I opened this report mostly for reference, I may have a look myself if I find the time.

Source

zorun

👍2

Most helpful comment

Actually I just figured out a workaround to this. Instead of routing the whole 0.0.0.0/0 through WG, what works is to route 0/1 and 128/1 .. So in code this is

config wireguard_wg
        ......
    list allowed_ips '0.0.0.0/1'
    list allowed_ips '128.0.0.0/1'

kim0 on 11 Dec 2018

👍2

All 4 comments

Hello @zorun .. I think I'm hitting this .. Any fixed or workarounds are welcome :)

kim0 on 11 Dec 2018

Actually I just figured out a workaround to this. Instead of routing the whole 0.0.0.0/0 through WG, what works is to route 0/1 and 128/1 .. So in code this is

config wireguard_wg
        ......
    list allowed_ips '0.0.0.0/1'
    list allowed_ips '128.0.0.0/1'

kim0 on 11 Dec 2018

👍2

I remember that I used the /1 approach myself to work around the issue. I still wonder what the right way to re-install the route would be. Ask odhcpd for an update?