I’ve been using systemd-networkd to manage the network connection on my workstations for years, but lately I’ve been puzzled why mDNS was not working. systemd-resolved has mDNS support.
The solution is to enable MulticastDNS in the network configuration file:
[cbrake@ceres ~]$ more /etc/systemd/network/20-wired.network
[Match]
Name=enp39s0
[Network]
DHCP=ipv4
MulticastDNS=yes
Now, ssh somemachine.local just works.
Are there any advantages to using Avahi? – perhaps more services could be discovered …