[ale] eth0 and ppp0 defaultroute question.

Jerry Z. Yu z.yu at voicecom.com
Thu Apr 17 13:14:25 EDT 2003


	I guess the simplest would be editing /etc/ppp/ip-up.local and 
ip-down.local to alter the default route whenever pppd is coming up or 
down.

On Thu, 17 Apr 2003, Mazukna, Thomas wrote:

#Hello.
#
#defaultroute is passed to pppd.
#case nr 1.
#
#route
#Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
#192.168.168.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
#0.0.0.0         192.168.168.1   0.0.0.0         UG    0      0        0 eth0
#
#dialout..... success....
#route
#Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
#X.X.X.X	    0.0.0.0         X.X.X.X		UH    0      0        0 ppp0
#192.168.168.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
#0.0.0.0         192.168.168.1   0.0.0.0         UG    0      0        0 eth0
#
#syslog:
#pppd[16338]: not replacing existing default route to eth0 [192.168.168.1]
#
#
#case nr2.
#
#route
#Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
#192.168.168.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
#
#dialout..... success....
#route
#Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
#X.X.X.X	    0.0.0.0         X.X.X.X		UH    0      0        0 ppp0
#192.168.168.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
#0.0.0.0         X.X.X.X		  0.0.0.0         UG    0      0        0 ppp0
#
#
#what is the best way to make this work without me dropping and reading defaultroute for ETH0 manually?
#
#thanks,
#Tomas
#
#-----Original Message-----
#From: Dow Hurst [mailto:dhurst at kennesaw.edu]
#Sent: Thursday, April 17, 2003 9:56 AM
#To: ale at ale.org
#Subject: Re: [ale] eth0 and ppp0 defaultroute question.
#
#
#The defaultroute option passed to pppd when it starts up is what is 
#meant by the previous email.  So in your options passed to pppd you must 
#have that keyword.  The actual route may be stored in the peers file and 
#be accessed when pppd realizes from the parameter you've passed to it 
#that it needs set the defaultroute.  Hope this clarifies,
#Dow
#
#
#Mazukna, Thomas wrote:
#
#>defaultroute is in /etc/ppp/peers/xxx file
#>pppd is not replacing it when i have defaultroute to eth0,
#>if I manually delete it, everything is fine.
#>all I need is the default route to be replaced by one to ppp0.
#>How to accomplish this ? drop defaultroute to eth0 in /etc/ppp/ip-up and read in down ?
#>
#>thanks,
#>Tomas
#>
#>-----Original Message-----
#>From: Jerry Z. Yu [mailto:z.yu at voicecom.com]
#>Sent: Thursday, April 17, 2003 8:55 AM
#>To: ale at ale.org
#>Subject: Re: [ale] eth0 and ppp0 defaultroute question.
#>
#>
#>	defaultroute (nodefaultroute) in /etc/ppp/OPTIONS
#>
#>	To seperate work-related traffic from your other traffic, add 
#>special static routes to work-related subnets in  /etc/ppp/ip-up.local, or 
#>delete souch routes in ip-down.local.  (as ppp0  goes away, the route 
#>should go away automatically).  Strict firewall rules should 
#>be in place to police the ppp0 interface. 
#>
#>	your company policy may require u to use ppp0 as default route, to 
#>subject all traffic to corporate firewall/security 
#>rules/monitoring thru-out the dial-up duration.
#>
#>On Thu, 17 Apr 2003, Mazukna, Thomas wrote:
#>
#>#Hi,
#>#
#>#security folks broke down and gave me dialin access to work for support.
#>#Now I have to solve defaultroute issue I have between eth0 and ppp0
#>#I have a home network with a NAT gateway through DSL so eth0 has a default route
#>#
#>#Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
#>#192.168.168.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
#>#0.0.0.0         192.168.168.1   0.0.0.0         UG    0      0        0 eth0
#>#
#>#when ppp0 comein it says 
#>#pppd[16338]: not replacing existing default route to eth0 [192.168.168.1]
#>#
#>#how to make pppd replace the defaultroute when ppp0 comes up and down
#>#
#>#thanks,
#>#Tomas
#>#_______________________________________________
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#>#
#>
#>Jerry Z. Yu				+1-404-487-8544 (O)
#>systems engineer			z.yu at voicecom.com
#>is support, voicecom, llc		www.voicecom.com
#>
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#>
#
#-- 
#__________________________________________________________
#Dow Hurst                  Office: 770-499-3428
#Systems Support Specialist    Fax: 770-423-6744
#1000 Chastain Rd. Bldg. 12
#Chemistry Department SC428  Email:   dhurst at kennesaw.edu
#Kennesaw State University         Dow.Hurst at mindspring.com
#Kennesaw, GA 30144
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Jerry Z. Yu				+1-404-487-8544 (O)
systems engineer			z.yu at voicecom.com
is support, voicecom, llc		www.voicecom.com

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