What does it mean 10.171.10.1 --> 10.171.10.2 in openvpn-created interface?

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1















I have installed OpenVPN server in FreeBSD and it created interface, visible by ifconfig:



ovpns4: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
options=80000<LINKSTATE>
...
inet 10.171.10.1 --> 10.171.10.2 netmask 0xffffffff
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
...


What does it mean 2 IP addresses instead of one and an arrow?



First address is pingable while second is not.










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    1















    I have installed OpenVPN server in FreeBSD and it created interface, visible by ifconfig:



    ovpns4: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
    options=80000<LINKSTATE>
    ...
    inet 10.171.10.1 --> 10.171.10.2 netmask 0xffffffff
    nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
    ...


    What does it mean 2 IP addresses instead of one and an arrow?



    First address is pingable while second is not.










    share|improve this question
























      1












      1








      1








      I have installed OpenVPN server in FreeBSD and it created interface, visible by ifconfig:



      ovpns4: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
      options=80000<LINKSTATE>
      ...
      inet 10.171.10.1 --> 10.171.10.2 netmask 0xffffffff
      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      ...


      What does it mean 2 IP addresses instead of one and an arrow?



      First address is pingable while second is not.










      share|improve this question














      I have installed OpenVPN server in FreeBSD and it created interface, visible by ifconfig:



      ovpns4: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
      options=80000<LINKSTATE>
      ...
      inet 10.171.10.1 --> 10.171.10.2 netmask 0xffffffff
      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
      ...


      What does it mean 2 IP addresses instead of one and an arrow?



      First address is pingable while second is not.







      networking freebsd vpn






      share|improve this question













      share|improve this question











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      share|improve this question










      asked Apr 2 '16 at 8:24









      DimsDims

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          This is a point-to-point interface renamed from tunN by OpenVPN that can only have 2 IP addresses.
          The address on the left is local IP address, equals to the address on other non-point-to-point interfaces; the right one is peer IP address.



          Due to the internal implementation of OpenVPN tun mode network, this peer address can't be ping(8)ed, but used as a router instead.



          For example, if you run PPP on FreeBSD (implemented with the same tun(4) interface) the peer address will be another host of the PPP link.






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            This is a point-to-point interface renamed from tunN by OpenVPN that can only have 2 IP addresses.
            The address on the left is local IP address, equals to the address on other non-point-to-point interfaces; the right one is peer IP address.



            Due to the internal implementation of OpenVPN tun mode network, this peer address can't be ping(8)ed, but used as a router instead.



            For example, if you run PPP on FreeBSD (implemented with the same tun(4) interface) the peer address will be another host of the PPP link.






            share|improve this answer



























              0














              This is a point-to-point interface renamed from tunN by OpenVPN that can only have 2 IP addresses.
              The address on the left is local IP address, equals to the address on other non-point-to-point interfaces; the right one is peer IP address.



              Due to the internal implementation of OpenVPN tun mode network, this peer address can't be ping(8)ed, but used as a router instead.



              For example, if you run PPP on FreeBSD (implemented with the same tun(4) interface) the peer address will be another host of the PPP link.






              share|improve this answer

























                0












                0








                0







                This is a point-to-point interface renamed from tunN by OpenVPN that can only have 2 IP addresses.
                The address on the left is local IP address, equals to the address on other non-point-to-point interfaces; the right one is peer IP address.



                Due to the internal implementation of OpenVPN tun mode network, this peer address can't be ping(8)ed, but used as a router instead.



                For example, if you run PPP on FreeBSD (implemented with the same tun(4) interface) the peer address will be another host of the PPP link.






                share|improve this answer













                This is a point-to-point interface renamed from tunN by OpenVPN that can only have 2 IP addresses.
                The address on the left is local IP address, equals to the address on other non-point-to-point interfaces; the right one is peer IP address.



                Due to the internal implementation of OpenVPN tun mode network, this peer address can't be ping(8)ed, but used as a router instead.



                For example, if you run PPP on FreeBSD (implemented with the same tun(4) interface) the peer address will be another host of the PPP link.







                share|improve this answer












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                share|improve this answer










                answered Jan 4 at 10:06









                Low powerLow power

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