const golang.org/x/sys/unix.IP_UNBLOCK_SOURCE

one use

	golang.org/x/sys/unix (current package)
		zerrors_darwin_amd64.go#L881: 	IP_UNBLOCK_SOURCE                 = 0x49

The pages are generated with Golds v0.3.2-preview. (GOOS=darwin GOARCH=amd64)
Golds is a Go 101 project developed by Tapir Liu.
PR and bug reports are welcome and can be submitted to the issue list.
Please follow @Go100and1 (reachable from the left QR code) to get the latest news of Golds.