China Mobile New H3C Technologies SRv6 is being rapidly deployed and is currently primarily used in trusted-domain backbone networks. Both the carrier market and the enterprise market are adopting SRv6 for end-to-end service delivery. However, if a firewall exists along an SRv6 path, not only legitimate SRv6 traffic but also ICMP packets generated on SRv6 transit node will be dropped. This proposal addresses this issue by using SID as source address in SRv6 packets.