r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
sendto(r0, &(0x7f0000000040)="04930f75", 0x4, 0x0, &(0x7f0000000140)=@l2tp6={0xa, 0x3a00, 0x0, @mcast1}, 0x80)
readv(r0, &(0x7f0000000b80)=[{&(0x7f0000000780)=""/67, 0x43}], 0x1)