r0 = socket$inet6_udp(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000540)={0xa, 0x0, 0x0, @dev, 0x2}, 0x1c) ioctl$int_in(r0, 0x5452, &(0x7f0000000040)=0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./file0\x00', 0x46e2, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000140)={'lo\x00'}) ioctl$sock_ipv6_tunnel_SIOCADD6RD(r1, 0x89f9, &(0x7f0000000240)={'sit0\x00', &(0x7f00000001c0)={'ip6gre0\x00', 0x0, 0x2f, 0x4, 0x0, 0x0, 0x9, @empty, @mcast1, 0x7820, 0x80, 0x800}}) connect$inet6(0xffffffffffffffff, &(0x7f0000000180)={0xa, 0x4e23, 0x4, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0xffff}, 0x1c) ioctl$sock_ipv6_tunnel_SIOCADDPRL(r1, 0x89f5, &(0x7f0000002000)={'syztnl0\x00', &(0x7f0000001f80)={'ip6tnl0\x00', r2, 0x4, 0x55, 0x8, 0x1, 0x0, @mcast2, @local, 0x80, 0x7, 0x3, 0x81}}) sendmmsg$inet6(0xffffffffffffffff, 0x0, 0x0, 0x0) setsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f0000000000)=0x4300, 0x4) pidfd_getfd(0xffffffffffffffff, r0, 0x0) sendmmsg$inet6(r0, &(0x7f0000004d00)=[{{0x0, 0x11, &(0x7f00000004c0)=[{&(0x7f0000000080)='K', 0x1}], 0x1, 0x0, 0x0, 0x3}, 0x200000}], 0x7ffff000, 0x0)