S01.   Push an IPv6 header with its own SRH
S02.   Set outer IPv6 SA = T and outer IPv6 DA to the first SID
          in the segment list
S03.   Set outer Payload Length, Traffic Class, Hop Limit, and
          Flow Label fields
S04.   Set the outer Next Header value
S05.   Decrement inner IPv6 Hop Limit or IPv4 TTL
S06.   Submit the packet to the IPv6 module for transmission to S1