Provides access to fields in an (IPv6) ICMP header.
Instance Variables | |
type | icmp.type -> anInteger |
ICMP message type | |
code | icmp.code -> anInteger |
ICMP message code | |
checksum | icmp.checksum -> anInteger |
ICMP checksum | |
data | icmp.data -> aByteArray |
All the ICMP bytes, i.e. header and payload. Use this if you need to work with some of the ICMP message types that python-libtrace doesn't decode fully | |
payload | icmp.payload ->anIP6 for types 1, 2, 3 and 4, otherwise aCFFIarray |
Some ICMP messages carry content from the packet that triggered them; icmp6.payload returns as much as it can of the triggering packet |
The content of an (IPv6) ICMP header varies depending on its type field. python-libtrace decodes the following types ...
Echo Request (type 128) and Echo Reply (type 129) | |
ident | icmp6.echo.ident -> anInteger |
Echo identifier | |
sequence | icmp6.echo.sequence -> anInteger |
Echo sequence number |
Packet too big (type 2) | |
mtu | icmp6.toobig.mtu -> anInteger |
MTU of link causing problem. Used as part of the Path MTU Discovery process |
Parameter problem (type 4) | |
pointer | icmp6.param.pointer-> anInteger |
Offset within the invoking packet where an error was detected |
Neighbour discovery (types 135-136), Redirect (type 137) | |
target_prefix | icmp6.neighbour.target_prefix -> anIPprefix |
IPv6 address of the solicitation's target |
Nevil Brownlee
Fri, 28 Oct 16 (NZDT)