r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
sendto(r0, &(0x7f0000000040)="5ea18a99", 0x4, 0x0, &(0x7f00000000c0)=@l2tp6={0xa, 0x0, 0x0, @mcast1}, 0x80)
readv(r0, &(0x7f0000000780)=[{&(0x7f0000000500)=""/250, 0xfa}], 0x1)