FreeBSD wireguard wg-quick remote IP address assignment is incorrect

[Jason A. Donenfeld]

We tried this already and it didn't work. See the below commit.
Perhaps you can update that bug report you filed?

commit 2c6cabd73dfb23990c245250ef2e502bdb33d189
Author: Jason A. Donenfeld <Jason at zx2c4.com>
Date:   Thu Feb 28 19:03:11 2019 +0100

   wg-quick: freebsd: rebreak interface loopback, while fixing localhost

   The commit 7c833642 ("wg-quick: freebsd: allow loopback to work") was
   supposed to make things better, but actually it just started sending
   legitimate localhost traffic over the WireGuard interface, which is
   really quite bad.

   This reverts commit 7c833642dfa342218602ab18e7091e86408d2982.

   Reported-by: Matt Smith <matt.xtaz at gmail.com>
   Signed-off-by: Jason A. Donenfeld <Jason at zx2c4.com>

diff --git a/src/wg-quick/freebsd.bash b/src/wg-quick/freebsd.bash
index 93f1a3b7..e83dbef0 100755
--- a/src/wg-quick/freebsd.bash
+++ b/src/wg-quick/freebsd.bash
@@ -158,7 +158,7 @@ add_addr() {
       if [[ $1 == *:* ]]; then
               cmd ifconfig "$INTERFACE" inet6 "$1" alias
       else
-               cmd ifconfig "$INTERFACE" inet "$1" 127.0.0.1 alias
+               cmd ifconfig "$INTERFACE" inet "$1" "${1%%/*}" alias
       fi
}