const net.sysARPHardwareGREIPv4

2 uses

	net (current package)
		interface_linux.go#L54: 	sysARPHardwareGREIPv4  = 778 // any over GRE over IPv4 tunneling
		interface_linux.go#L69: 				case sysARPHardwareIPv4IPv4, sysARPHardwareGREIPv4, sysARPHardwareIPv6IPv4: