r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000540)={0xa, 0x0, 0x0, @dev, 0x2}, 0x1c)
r1 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000140)={'syz_tun\x00', <r2=>0x0})
sendmmsg$inet6(r0, &(0x7f00000010c0)=[{{&(0x7f0000000080)={0xa, 0x4e20, 0x0, @ipv4={'\x00', '\xff\xff', @remote}}, 0x1c, 0x0}}, {{0x0, 0x0, 0x0, 0x0, &(0x7f00000006c0)=[@pktinfo={{0x24, 0x29, 0x32, {@initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, r2}}}], 0x28}}], 0x2, 0x0)