* udptunnel-reconf default script pauses for 10s between restarts.
* udptunnel-reconf inittab entries default to having </dev/null.
* udptunnel-reconf understands forbid_remote set to `-'.
+ * forbid_remote is a per-tunnel option.
+ * udptunnel-vpn-config.m4 allows global file to override as intended.
* www-cgi passes HTTP_COOKIE header.
+ * indirect ssh via V_sshinvoke.
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