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Only use eth handle for Ethernet on non-Windows systems.

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dmiller
2025-09-03 17:04:48 +00:00
parent 99e396b4a0
commit b4e536f371
1 changed files with 14 additions and 1 deletions
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15
libnetutil/netutil.cc
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@@ -1019,7 +1019,20 @@ netutil_eth_t *netutil_eth_open(const char *device) {
} while (0);
#else
eth_handle(e) = eth_open(device);
e->datalink = DLT_EN10MB;
if (eth_handle(e)) {
eth_addr_t ea;
/* No guarantees this is Ethernet. Dnet doesn't offer a way to check the L2
* protocol, so we'll try to get the Ethernet address to confirm.
*/
if (0 == eth_get(eth_handle(e), &ea) && 0 != memcmp(&ea, "\0\0\0\0\0\0", 6)) {
e->datalink = DLT_EN10MB;
}
else {
// Not a data link we know about.
eth_handle_close(eth_handle(e));
eth_handle(e) = NULL;
}
}
#endif
if (eth_handle(e) == NULL) {