r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_int(r0, 0x29, 0x33, &(0x7f0000001500)=0x8, 0x4)
sendto(r0, &(0x7f0000000040)="5ea18a99", 0x4, 0x0, &(0x7f00000000c0)=@l2tp6={0xa, 0x0, 0x0, @mcast1}, 0x80)
recvmmsg(r0, &(0x7f0000004240)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000001080)=""/16, 0x10}}], 0x1, 0x0, 0x0)