* "EIGRP" from Cisco.
*
* Recent FreeBSD, DragonFly BSD, and macOS <netinet/in.h>
- * headers define IP_PROTO_IGRP as 9 and IP_PROTO_IGRP
- * as 88. We define IP_PROTO_PIGP ("private interior
- * gateway protocol") as 9 and IP_PROTO_EIGRP as 88;
+ * headers define IPPROTO_PIGP as 9 and IPPROTO_IGRP
+ * as 88. We define IPPROTO_PIGP ("private interior
+ * gateway protocol") as 9 and IPPROTO_EIGRP as 88;
* those names better match what the current protocol
* number assignments say.
*/