Patrick Cernko <[EMAIL PROTECTED]> writes: > I discovered a small problem with the increasing number of servers with > canching IPs but constant name (provided by Nameservers like > dyndns.org). If the download with wget is interrupted by a IP change > (e.g. a dialup host whose provider killed the connection), wget retries > the download using the previously cached IP. This will fail as the host > (specified by its "dyndns"-Hostname) is no longer reachable via this old > IP. Instead he is reachable over a new IP (assigned by its provider). > But it is still reachable via its hostname as the host updated the DNS > entry with its new IP. > > So I patched wget to tell it, not to use the cached IPs from earlier but > instead do a new host lookup like for the first time connecting the > host.
Patrick, thanks for the patch and the explanation. A similar change, probably with invocation `--dns-cache=off', is scheduled to appear in the next release. Your contribution is also important because we've been looking for a suitable text for the manual that explains why it is sometimes beneficial to turn off the DNS cache.
