The following are ICMP Error messages:
- Type (Bits 0-7): Specifies the type
of message.
- Type 3—Destination Unreachable
- Type 4—Source Quench
- Type 5—Redirect
- Type 11—Time Exceeded
- Type 12—Parameter Problem
- Code (bits 8-15): Specifies codes
associated with each ICMP type.
- Checksum (bits 16-31): Specifies the
checksum value of the header fields, excluding the checksum field.
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