v1.17: docs: Document encapsulation options #40471
Merged
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[ upstream commit 70b7ecd ]
[ backporter's notes: Remove mention of underlay-protocol option as that was introduced in v1.18. Keep the note on IPv4 being required on the underlying network. ]
Most of these options are only documented in the cmdref and mentioned in passing in various guides. The underlay-protocol option was also recently introduced. Let's document them all properly.