ioctl$sock_ipv4_tunnel_SIOCDELTUNNEL(0xffffffffffffffff, 0x89f2, &(0x7f0000000100)={'syztnl1\x00', 0x0})
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
ioctl$sock_inet6_tcp_SIOCINQ(r0, 0x541b, &(0x7f0000000140))