Merge pull request #16929 from ssahani/network-bare-udp

network: introduce Bare UDP Tunnelling

diff --cc man/systemd.netdev.xml
Simple merge

diff --cc src/network/netdev/netdev-gperf.gperf
Simple merge

diff --cc src/network/netdev/netdev.c
Simple merge

diff --cc test/fuzz/fuzz-netdev-parser/directives.netdev
Simple merge

diff --cc test/test-network/conf/netdev-link-local-addressing-yes.network
Simple merge

diff --cc test/test-network/systemd-networkd-tests.py
Simple merge