r0 = socket$inet6_udp(0xa, 0x2, 0x0)
r1 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000140)={'syz_tun\x00', <r2=>0x0})
ioctl$sock_inet6_SIOCSIFADDR(r0, 0x8916, &(0x7f0000000240)={@loopback, 0x0, r2})