If the host OS is already big endian, we were swapping bytes when we
shouldn't have. Use the Go helper to make sure we do the endianness
correctly
Fixes: #1189
We had to manually define these types before, but the latest release of
`golang.org/x/sys` adds these definitions:
- 6dfb94eaa3
Since we just updated with this PR, we can clean this up now:
- https://github.com/slackhq/nebula/pull/1161
On some systems, IPv6 is disabled (for example, CIS benchmark recommends to disable it when not used), but currently all UDP connections are using AF_INET6 sockets.
When we are binding AF_INET6 socket to an address like ::ffff:1.2.3.4 (IPv4 addresses are parsed by net.ParseIP this way), we can't send or receive IPv6 packets anyway, so this will not break any scenarios.
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Co-authored-by: Wade Simmons <wsimmons@slack-corp.com>
Wade Simmons