|  | /* | 
|  | * This file is part of the UCB release of Plan 9. It is subject to the license | 
|  | * terms in the LICENSE file found in the top-level directory of this | 
|  | * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No | 
|  | * part of the UCB release of Plan 9, including this file, may be copied, | 
|  | * modified, propagated, or distributed except according to the terms contained | 
|  | * in the LICENSE file. | 
|  | */ | 
|  |  | 
|  | // ICMP for IP v4 and v6 | 
|  | enum { | 
|  | // Packet Types, icmp v4 (rfc 792) | 
|  | EchoReply = 0, | 
|  | Unreachable = 3, | 
|  | SrcQuench = 4, | 
|  | Redirect = 5, | 
|  | EchoRequest = 8, | 
|  | TimeExceed = 11, | 
|  | InParmProblem = 12, | 
|  | Timestamp = 13, | 
|  | TimestampReply = 14, | 
|  | InfoRequest = 15, | 
|  | InfoReply = 16, | 
|  | AddrMaskRequest = 17, | 
|  | AddrMaskReply = 18, | 
|  | Traceroute = 30, | 
|  | IPv6WhereAreYou = 33, | 
|  | IPv6IAmHere = 34, | 
|  |  | 
|  | // packet types, icmp v6 (rfc 2463) | 
|  |  | 
|  | // error messages | 
|  | UnreachableV6 = 1, | 
|  | PacketTooBigV6 = 2, | 
|  | TimeExceedV6 = 3, | 
|  | ParamProblemV6 = 4, | 
|  |  | 
|  | // informational messages (rfc 2461 also) | 
|  | EchoRequestV6 = 128, | 
|  | EchoReplyV6 = 129, | 
|  | RouterSolicit = 133, | 
|  | RouterAdvert = 134, | 
|  | NbrSolicit = 135, | 
|  | NbrAdvert = 136, | 
|  | RedirectV6 = 137, | 
|  |  | 
|  | Maxtype6 = 137, | 
|  |  | 
|  | ICMP_HDRSIZE = 8, | 
|  | }; |