remove runtime.LockOSThread() because it makes things worse now
remove the "custom" Write() method from tun_linux.go, the stdlib path via os.File performs better
We should change our guidance around number of routines, ~2 per thread (that you wish to use for Nebula) seems to be about right now
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>
