r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @local}}, 0x1c)
connect$inet6(r0, &(0x7f0000003e40)={0xa, 0x0, 0x0, @empty}, 0x1c)
getsockopt$inet6_tcp_TCP_ZEROCOPY_RECEIVE(r0, 0x6, 0x23, &(0x7f0000000480)={&(0x7f0000ffb000/0x2000)=nil, 0x2000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, &(0x7f00000004c0)=0x40)