On Fri, Nov 06, 2020 at 03:55:47PM +0800, Hangbin Liu wrote: > > > - key.remote_ipv6[0] = bpf_htonl(0x2401db00); > > > - key.tunnel_ttl = 64; > > The code logic is same. It set tunnel remote addr to dst IPv6 address, as > they are both testing IP(v4 or v6) over IPv6 tunnel. OK, I decide to keep the kernel ip6ip6 code as using ipip6_set_tunnel obj in ip6ip6 testing may cause user confused. Thanks Hangbin