const golang.org/x/sys/unix.IFLA_INET6_RA_MTU

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1611: 	IFLA_INET6_RA_MTU                          = 0x9

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