s/(?:Can(?:no|')t assign requested address|Address not available)/Netwk addr not available/;
s/Operation timed out/Connection timed out/;
s/Address family not supported by protocol family/Network Error/;
- s/Network is unreachable/Network unreachable/;
+ s/Network(?: is)? unreachable/Network Error/;
s/Invalid argument/Network Error/;
s/\(\d+\): Network/(dd): Network/;