r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
listen(r0, 0x0)
getsockopt$inet6_tcp_TCP_ZEROCOPY_RECEIVE(r0, 0x6, 0x23, &(0x7f0000002480)={&(0x7f0000ffb000/0x4000)=nil, 0x4000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, &(0x7f00000024c0)=0x40)