| icmp.checksum | Checksum | Unsigned 16-bit integer | |
| icmp.checksum_bad | Bad Checksum | Boolean | |
| icmp.code | Code | Unsigned 8-bit integer | |
| icmp.mip.b | Busy | Boolean | This FA will not accept requests at this time |
| icmp.mip.challenge | Challenge | Byte array | |
| icmp.mip.coa | Care-Of-Address | IPv4 address | |
| icmp.mip.f | Foreign Agent | Boolean | Foreign Agent Services Offered |
| icmp.mip.flags | Flags | Unsigned 8-bit integer | |
| icmp.mip.g | GRE | Boolean | GRE encapsulated tunneled datagram support |
| icmp.mip.h | Home Agent | Boolean | Home Agent Services Offered |
| icmp.mip.length | Length | Unsigned 8-bit integer | |
| icmp.mip.life | Registration Lifetime | Unsigned 16-bit integer | |
| icmp.mip.m | Minimal Encapsulation | Boolean | Minimal encapsulation tunneled datagram support |
| icmp.mip.prefixlength | Prefix Length | Unsigned 8-bit integer | |
| icmp.mip.r | Registration Required | Boolean | Registration with this FA is required |
| icmp.mip.res | Reserved | Boolean | Reserved |
| icmp.mip.reserved | Reserved | Unsigned 8-bit integer | |
| icmp.mip.seq | Sequence Number | Unsigned 16-bit integer | |
| icmp.mip.type | Extension Type | Unsigned 8-bit integer | |
| icmp.mip.v | VJ Comp | Boolean | Van Jacobson Header Compression Support |
| icmp.type | Type | Unsigned 8-bit integer | |