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Merge pull request #643 from skuhl/fix-to-ns-with-ns-hosts

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Fix: Allow --to-ns and --ns-host without --dns.
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Brian May 2021-05-22 13:06:48 +10:00 committed by GitHub
commit bc54ffe398
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1 changed files with 14 additions and 7 deletions
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21
sshuttle/client.py
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@ -688,19 +688,26 @@ def main(listenip_v6, listenip_v4,
fw = FirewallClient(method_name, sudo_pythonpath, ttl)
# If --dns is used, store the IP addresses that the client
# normally uses for DNS lookups in nslist. The firewall needs to
# redirect packets outgoing to this server to the remote host
# nslist is the list of name severs to intercept. If --dns is
# used, we add all DNS servers in resolv.conf. Otherwise, the list
# can be populated with the --ns-hosts option (which is already
# stored in nslist). This list is used to setup the firewall so it
# can redirect packets outgoing to this server to the remote host
# instead.
if dns:
nslist += resolvconf_nameservers(True)
# If we are intercepting DNS requests, we tell the remote host
# where it should send the DNS requests to with the --to-ns
# option.
if len(nslist) > 0:
if to_nameserver is not None:
to_nameserver = "%s@%s" % tuple(to_nameserver[1:])
else:
# option doesn't make sense if we aren't proxying dns
else: # if we are not intercepting DNS traffic
# ...and the user specified a server to send DNS traffic to.
if to_nameserver and len(to_nameserver) > 0:
print("WARNING: --to-ns option is ignored because --dns was not "
"used.")
print("WARNING: --to-ns option is ignored unless "
"--dns or --ns-hosts is used.")
to_nameserver = None
# Get family specific subnet lists. Also, the user may not specify