Re: Verizon EV-DO and local addresses

Dan Williams wrote:
On Fri, 2008-10-24 at 13:26 -0500, Jason Martens wrote:
Hey all,
I just learned some interesting information about Verizon's EV-DO policies. I have a Verizon card, and I could connect just fine, but every time it would disconnect after less than a minute with the following message:

Oct 24 12:46:37 tank pppd[17248]: Script /etc/ppp/ip-up started (pid 17292)

Oct 24 12:46:45 tank pppd[17248]: Script /etc/ppp/ip-up finished (pid 17292), status = 0x0

Oct 24 12:47:14 tank pppd[17248]: rcvd [LCP TermReq id=0xb]

Oct 24 12:47:14 tank pppd[17248]: LCP terminated by peer

Oct 24 12:47:14 tank pppd[17248]: Connect time 0.7 minutes.

I tried adding the lcp-echo-failure and -interval options, but this made no difference for me. Since I work for a company using lots of Verizon cards, I placed a call to enterprise support, and they informed me that if they detect *any* private address traffic over the EV-DO connection, they terminate it. Sure enough, after disabling all of my local interfaces, the connection has been up for > 30 minutes now. However, I really wanted to use the EV-DO for internet access, but eth0 for lan access. I added this rule which I think sends all 10.* addresses out the local interface instead of ppp0, but I'm not an expert in iptables by any stretch so use at your own risk:

iptables -I OUTPUT -o eth0 -s

What's the routing table when you're connected on the card?  Can you
paste in the output of '/sbin/route -n' for me?

A guy I work with uses his Verizon card all the time and AFAIK hasn't
encountered this issue yet, despite using recent SVN snapshots of NM.

Here's what I have now that seems to be working. The and the were added manually. I can try this again without the above iptables rule, and there may be something about the order that things came up in, because I was noticing DNS traffic trying to go out the ppp0 interface at first (I'm still using local DNS, no split setup now).

tank:~# /sbin/route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface UH    0      0        0 ppp0   UG    0      0        0 eth1     U     0      0        0 eth1       UG    0      0        0 eth1         U     0      0        0 ppp0

Maybe Verizon uses different network rules in different markets? This was in Chicago.

Jason Martens

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