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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L1454: 	IFA_F_MCAUTOJOIN                            = 0x400

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)