Re: topology does work on mac osx with a manual work arround (wasRe: [Openvpn-users] topology subnet 2.1beta7 mac osx - ifconfig: ioctl (SIOCAIFADDR): Destination address required

[Jon Bendtsen <jon.bendtsen@xxxxxxxxxx>]

Den 1. dec 2005 kl. 14:54 skrev Mathias Sundman:

> On Thu, 1 Dec 2005, James Yonan wrote:
>
> > On Wed, 30 Nov 2005, Mathias Sundman wrote:

[cuuuuuuuuuuut]


> > No, I don't think we should universally push a route, since that will
> > break platforms which don't need the extra route in the first  
> > place (like
> > Linux or Windows).
> >
> > I think it would be better if the OpenVPN client generates the  
> > "route add"
> > by itself, on platforms where the tun/tap driver can't accept a  
> > netmask in
> > tun mode.
>
> Okay, attached is a new patch that adds this route automatically.  
> Could you please try it Jon.

It does sort of work.

I can now ping the server just fine, and other openvpn servers running
in the same address scope on the same computer.
15:56:39.376461 IP 192.168.123.36 > 192.168.123.33: icmp 64: echo  
request seq 0
15:56:39.397597 IP 192.168.123.33 > 192.168.123.36: icmp 64: echo  
reply seq 0
+
15:56:35.172105 IP 192.168.123.36 > 192.168.123.34: icmp 64: echo  
request seq 61
15:56:35.173235 IP 192.168.123.34 > 192.168.123.36: icmp 64: echo  
reply seq 61



I can also ping my linux client in the same scope, but connected to one
of the other servers.
16:00:12.746043 IP 192.168.123.36 > 192.168.123.38: icmp 64: echo  
request seq 15
16:00:12.747761 IP 192.168.123.38 > 192.168.123.36: icmp 64: echo  
reply seq 15



However, if i ping a unused IP address i get this:
tcpdump: 16:00:39.564517 IP 192.168.123.34 > 192.168.123.36: icmp 92:  
redirect 192.168.123.39 to host 192.168.123.39
PING 192.168.123.39 (192.168.123.39): 56 data bytes
92 bytes from 192.168.123.34: Redirect Host(New addr: 192.168.123.39)
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
4  5  00 0054 f4ae   0 0000  3f  01 0f5e 192.168.123.36  192.168.123.39


and if i ping my own address i get the same error:
tun0: flags=8951<UP,POINTOPOINT,RUNNING,PROMISC,SIMPLEX,MULTICAST>  
mtu 1500
        inet 192.168.123.36 --> 192.168.123.36 netmask 0xffffff00
        open (pid 2103)
PING 192.168.123.36 (192.168.123.36): 56 data bytes
92 bytes from 192.168.123.34: Redirect Host(New addr: 192.168.123.36)
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
4  5  00 0054 f4fb   0 0000  3f  01 0f14 192.168.123.36  192.168.123.36

64 bytes from 192.168.123.36: icmp_seq=0 ttl=63 time=11.515 ms
92 bytes from 192.168.123.34: Redirect Host(New addr: 192.168.123.36)
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
4  5  00 0054 f50c   0 0000  3f  01 0f03 192.168.123.36  192.168.123.36

64 bytes from 192.168.123.36: icmp_seq=1 ttl=63 time=3.442 ms

16:06:09.918826 IP 192.168.123.34 > 192.168.123.36: icmp 92: redirect  
192.168.123.36 to host 192.168.123.36
16:06:09.919055 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
request seq 1
16:06:09.919130 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
reply seq 1
16:06:09.920567 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
reply seq 1



16:06:15.151314 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
request seq 2
16:06:15.152495 IP 192.168.123.34 > 192.168.123.36: icmp 92: redirect  
192.168.123.36 to host 192.168.123.36
16:06:15.152714 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
request seq 2
16:06:15.152789 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
reply seq 2
16:06:15.154256 IP 192.168.123.36 > 192.168.123.36: icmp 64: echo  
reply seq 2





JonB