Tickets :: Comment on [#13973] Allow providing netmask when $conf[auth][checkip] is checked

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Comment	> When $conf[auth][checkip] is checked, users using an IPv6 connection > will be logged out frequently when Privacy Extensions for SLAAC (RFC > 4941) are used (in many OSes, this will be the default address that > is used for outbound connections. Typically, these addresses will > timeout after a day, but the lifetime of an address may be as short > as an hour (depending on what is reported by the router). Note that > users don't have any control over the lifetime of these addresses, > since the lifetime is determined by the router. > > Of course, it woudl be possible to switch off $conf[auth][checkip] > completely, but it is also possible to look at just the first 64 bits > of the IPv6 address (the network part) as only the host part (the > remaining 64 bits) will change. Therefor I propose to add a > configuration option where only a configurable number of bits is > checked (default: 64) in case a client is connected over IPv6.
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