The Tcpdump Group git mirrors - libpcap/blob - doc/README.hurd.md

   1 # Compiling and using libpcap on GNU/Hurd
   2
   3 libpcap on Hurd currently does not support packet capture on the loopback
   4 network interface.  BPF works in kernel only if the filter length is not
   5 greater that 31 BPF instructions and does not use `BPF_MOD` or `BPF_XOR`.
   6 Packet timestamping always occurs in userland.  Wireless monitor mode is not
   7 supported.  Packet capture sees only packets received on the interface.
   8 [**pcap_set_buffer_size**](https://www.tcpdump.org/manpages/pcap_set_buffer_size.3pcap.html)(3PCAP)
   9 has no effect.
  10 [**pcap_setdirection**](https://www.tcpdump.org/manpages/pcap_setdirection.3pcap.html)(3PCAP)
  11 is not supported.
  12 [**pcap_set_promisc**](https://www.tcpdump.org/manpages/pcap_set_promisc.3pcap.html)(3PCAP)
  13 has no effect.
  14
  15 ## Debian GNU/Hurd 12
  16
  17 * flex 2.6.4 and GNU Bison 3.8.2 work.
  18 * CMake 3.25.1 works.
  19 * GCC 12.2.0 and Clang 14.0.6 work.
  20
  21 For reference, the tests were done using a system installed from the 2023-06-08
  22 snapshot from [here](https://cdimage.debian.org/cdimage/ports/12.0/hurd-i386/).