What is wrong with pppd version 2.3.5?

[Achim Gorski]

Recently I installed 5.2-RC2 for testing purpose and
saw an unexplainable behaviour of pppd 2.3.5.
I have an old FreeBSD 4.2 running and connecting via
modem with ppp to an ISP using ipfw, natd and pppd.  
Then I configured the 5.2-RC2 install logical identical,
but it does not route any packets. I can ping ppp0 but not
the default gateway. This was pppd 2.3.5.
Because I did not found anything wrong, I just copied the
old pppd binary version 2.3.1 from 1998 to the 5.2-RC2 test
system and this works! I was really surprised, because I
did not change anything except the pppd binary.

Any clue what is wrong here? Is it my configuration or
something in pppd? What changed in version 2.3.5?


Thanks, Achim



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Here is what I configured.

$ pppd user username /dev/cuaa0  57600 connect 'my script'


/etc/ppp/options:
modem crtscts noipdefault defaultroute netmask 255.255.255.0 

/etc/rc.conf:
firewall_enable="YES"            
firewall_type="OPEN"             
firewall_logging="YES"
natd_enable="YES"                
natd_interface="ppp0" 
natd_flags="-dynamic "
gateway_enable="YES"

Kernel:
options         IPFIREWALL    
options         IPFIREWALL_VERBOSE    
options         IPFIREWALL_VERBOSE_LIMIT=100 
options         IPFIREWALL_DEFAULT_TO_ACCEPT 
options         IPDIVERT 
options         TCP_DROP_SYNFIN
options         IPSTEALTH