My nixos seems to have the following in my /etc/resolv.conf file. What is %wlp3s0 in line 4? Where is this syntax defined?
$ cat /etc/resolv.conf
# Generated by resolvconf
search home
nameserver 192.168.1.254
nameserver fe80::c2d7:aaff:fe96:8d82%wlp3s0
options edns0