diff options
| -rw-r--r-- | dns/rdtypes/IN/WKS.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/dns/rdtypes/IN/WKS.py b/dns/rdtypes/IN/WKS.py index 0d36281..e9bc33c 100644 --- a/dns/rdtypes/IN/WKS.py +++ b/dns/rdtypes/IN/WKS.py @@ -22,9 +22,13 @@ import dns.ipv4 import dns.immutable import dns.rdata -_proto_tcp = socket.getprotobyname('tcp') -_proto_udp = socket.getprotobyname('udp') - +try: + _proto_tcp = socket.getprotobyname('tcp') + _proto_udp = socket.getprotobyname('udp') +except OSError: + # Fall back to defaults in case /etc/protocols is unavailable. + _proto_tcp = 6 + _proto_udp = 17 @dns.immutable.immutable class WKS(dns.rdata.Rdata): |