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first_eth_interface: ignore MAC addresses, look for IPv4/IPv6 addresses

This commit is contained in:
Michael Stapelberg 2015-11-16 22:41:18 +01:00
parent 5081f2b5b8
commit 3e14e6e5f3
1 changed files with 7 additions and 0 deletions
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7
src/first_network_device.c
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@ -23,6 +23,13 @@ const char *first_eth_interface(const net_type_t type) {
addrp = addrp->ifa_next) {
if (strncasecmp("lo", addrp->ifa_name, strlen("lo")) == 0)
continue;
if (addrp->ifa_addr == NULL)
continue;
// Skip PF_PACKET addresses (MAC addresses), as they are present on any
// ethernet interface.
if (addrp->ifa_addr->sa_family != AF_INET &&
addrp->ifa_addr->sa_family != AF_INET6)
continue;
// Skip this interface if it is a wireless interface.
snprintf(path, sizeof(path), "/sys/class/net/%s/wireless", addrp->ifa_name);
const bool is_wireless = (stat(path, &stbuf) == 0);