r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
getsockopt$inet6_tcp_TCP_ZEROCOPY_RECEIVE(r0, 0x6, 0xc, &(0x7f0000000600)={&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, &(0x7f0000000640)=0x40)