r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
ioctl$sock_inet6_SIOCDELRT(r0, 0x541b, &(0x7f0000000280)={@mcast1, @initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, @remote})