Set the IP source and destination addresses in the IP header of the
ICMP reply as follows:
- Use the request IP source address as the reply IP destination address
- If the request IP destination address is a multicast IP address
- choose a reply IP source address different from the request IP
source address,
- re-compute the IP header checksum.
Otherwise
- switch the request IP source and destination addresses in the
reply,
- keep the IP header checksum unchanged.
Signed-off-by: Ivan Boule <ivan.boule@6wind.com>
8443ce8193