Re: could not determine remote ip address

Greetings Michael ,

[email protected] wrote:
> who knows about the IPCP negotiation of ppp?
> I've searched in this and other newsgroups for this error message:
>     Could not determine remote IP Address,
> but did not find a solution. Got this message when trying to start pppd.
> 
> Just before this message it gives in the debug log:
>     rcvd [IPCP ConfAck id=0x2 <addr 62.59.16.49> <compress VJ 0f 01>

Would i be asking too much if i would ask you to sent the entire 
negotiation ?
OR at least all the lines of the negotiation of ppp that speak about IPCP .


Observe for a while one of my negotiations



Aug 10 00:37:42 Magellan pppd[2378]: sent [IPCP ConfReq id=0x1 <addr 
10.0.0.2> <compress VJ 0f 01> <ms-dns1 0.0.0.0> <ms-dns
3 0.0.0.0>]

Observer the non-routable IP 10.0.0.2 , when my dialin server sees an 
non-routable IP , he understands that he
must assign a new  routable IP

Aug 10 00:37:42 Magellan kernel: PPP BSD Compression module registered
Aug 10 00:37:42 Magellan kernel: PPP Deflate Compression module registered
Aug 10 00:37:42 Magellan pppd[2378]: sent [CCP ConfReq id=0x1 <deflate 
15> <deflate(old#) 15> <bsd v1 15>]

CCP is the compression control protocol , which we are not intrested in 
right now .

Aug 10 00:37:42 Magellan pppd[2378]: rcvd [IPCP ConfReq id=0x1 <addr 
Remote.IP>]


Here with the ConfReq , my dialin server says that he will configure my 
IP Address  and the
remote IP ( that will provide my with my new IP is  addr Remote.IP )

Aug 10 00:37:42 Magellan pppd[2378]: sent [IPCP ConfAck id=0x1 <addr 
Remote.IP>]

now  when the PPP Daemon on my computer receives that  he ACKnowledges 
with the
above line , saying that he will ACCEPT the configuration provided by 
addr Remote.IP

Aug 10 00:37:42 Magellan pppd[2378]: rcvd [IPCP ConfRej id=0x1 <compress 
VJ 0f 01>]
Aug 10 00:37:42 Magellan pppd[2378]: sent [IPCP ConfReq id=0x2 <addr 
10.0.0.2> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]

Now with this line my PPP Daemon says to my Dialin Server i want 3 IPs

1.  My new IP
2. The IP of the Primary      DNS Server
3. The IP of the Secondary DNS Server

Aug 10 00:37:42 Magellan pppd[2378]: rcvd [LCP ProtRej id=0x45 80 fd 01 
01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
Aug 10 00:37:42 Magellan pppd[2378]: rcvd [IPCP ConfNak id=0x2 <addr 
Local.IP> <ms-dns1 IP.of.DNS.Server.1> <ms-dns3 IP.of.
DNS.Server.2>]

Here the configuration with id=0x2 get's rejected because it contained 
my initial non routable IP Address , among with the
rejection though , the Dialin Server provides me the correct values.

Aug 10 00:37:42 Magellan pppd[2378]: sent [IPCP ConfReq id=0x3 <addr 
Local.IP> <ms-dns1 IP.of.DNS.Server.1> <ms-dns3 IP.of.DNS.
Server.2>]

Now i  make a new request to my Dialin Server providing the IP's that 
were just received .


Aug 10 00:37:42 Magellan pppd[2378]: rcvd [IPCP ConfAck id=0x3 <addr 
Local.IP> <ms-dns1 IP.of.DNS.Server.1> <ms-dns3 IP.of.DNS.
Server.2>]


Now observe that i receive a ConfAck with the id=0x3 , which says that 
my Dialin Server ACKnowledges,
agrees to my request and so i have the IP Address that i will use during 
this internet session , the IP of the
Primary DNS Server and the IP of the Secondary IP Server .

Aug 10 00:37:42 Magellan pppd[2378]: local  IP address  Local.IP
Aug 10 00:37:42 Magellan pppd[2378]: remote IP address  Remote.IP
Aug 10 00:37:42 Magellan pppd[2378]: primary   DNS address 
IP.of.DNS.Server.1
Aug 10 00:37:42 Magellan pppd[2378]: secondary DNS address 
IP.of.DNS.Server.2

  The above is just the printout of the configuration that was just 
received .

All the above are valid for my dialup connection ( i use a software 
modem ) .
My IP is assigned dynamically each time i connect .

Compare the lines i just gave you and sent back yours


Kind Regards,
   Kostas