Jean-Sebastien Stoezel schrieb:

Hello,

How to get the MAC address of an ethernet interface, using the boost C++ library?

Well it's not implemented in boost. I can show you an example how to get it on linux and windows (I had to get it for a library I am working on). However that's just the rough way, I'm not in need to get it for a specific interface, but with this you'll find the needed info faster ;) Linux: #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <net/if.h> #include <netpacket/packet.h> #include <ifaddrs.h> ifaddrs * ifap = 0; if(getifaddrs(&ifap) == 0) { ifaddrs * iter = ifap; while(iter) { sockaddr_ll * sal = reinterpret_cast<sockaddr_ll*>(iter->ifa_addr); if(sal->sll_family == AF_PACKET) { // get the mac bytes // copy(sal->sll_addr, // sal->sll_addr+sal->sll_hallen, // buffer); } iter = iter->ifa_next; } freeifaddrs(ifap); } Windows: #include <winsock2.h> #include <iphlpapi.h> std::vector<boost::uint8_t> buf; DWORD bufLen = 0; GetAdaptersAddresses(0, 0, 0, 0, &bufLen); if(bufLen) { buf.resize(bufLen, 0); IP_ADAPTER_ADDRESSES * ptr = reinterpret_cast<IP_ADAPTER_ADDRESSES*>(&buf[0]); DWORD err = GetAdaptersAddresses(0, 0, 0, ptr, &bufLen); if(err == NO_ERROR) { while(ptr) { if(ptr->PhysicalAddressLength) { // get the mac bytes // copy(ptr->PhysicalAddress, // ptr->PhysicalAddress+ptr->PhysicalAddressLength, // buffer); } ptr = ptr->Next; } } } Regards, Vinzenz