Port Discovery not working on Linux

[tendstofortytwo]

As of 1.50.1, portlist.Poll() returns Pid:0 on Linux, even with sudo permissions given to tsrelay. tailscale/tailscale@52e4f24 fixes this, but this won't be available to tsrelay until a new version of the portlist package is available.

I have confirmed that using portlist with the updated package fixes the problem by using a local copy of the tailscale repo:

diff --git a/go.mod b/go.mod
index 72502d9..0f09973 100644
--- a/go.mod
+++ b/go.mod
@@ -11,13 +11,16 @@ require (
        tailscale.com v1.50.0
 )
 
+replace tailscale.com v1.50.0 => /home/nsood/tailscale