r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
connect$inet6(r0, &(0x7f0000000480)={0xa, 0x0, 0x0, @local, 0x1}, 0x1c)
getsockopt$inet6_tcp_TCP_ZEROCOPY_RECEIVE(r0, 0x6, 0x23, &(0x7f00000004c0)={&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, &(0x7f0000000500)=0x40)