r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000000)={0x0, <r1=>0x0}, &(0x7f0000000040)=0x5)
setuid(r1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL(r2, 0x89f1, &(0x7f0000003f00)={'sit0\x00', &(0x7f0000003e80)={'syztnl1\x00', 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @private2, @private0}})