old "gre-bridge" tunnel type was renamed to "gretap" in T3364 to match upstream linux interface types/naming.
vyos configexamples got fixed in T3389 / https://github.com/vyos/vyos-documentation/commit/349d786ea9a09731e586d81f31f0a48664fb24d7
however "gretap" is still missing from tunnel section in docs:
- 1.3: https://docs.vyos.io/en/equuleus/configuration/interfaces/tunnel.html
- latest: https://docs.vyos.io/en/latest/configuration/interfaces/tunnel.html
old crux branch does have the old "gre-bridge" syntax listed in tunnel section:
we should add the "gretap" tunnel type info to docs tunnel section for latest and 1.3.