I've searched and searched, but I am unable to find a solution. I don't know why this works sometimes and not others, but I'm using an SRX 210 and Comcast is my ISP. I cannot pull a DHCP address right now, and I suspect it is either because comcast cannot deal with a TTL of 1, or my motorola surfboard modem drops it. i'm leaning toward the former.
I can connect with my PC direct to the modem and get an IP from comcast. my PC sends a TTL of 128. when i plug in the fw, it uses a TTL of 1 and will not pull an address. when I sniff, it looks like i get a response, but due to how cable works, they are responses to other customers. So, i never get a DHCP offer, and because the only people in their tech support you can talk to are the level 1's that just tell you to reboot your modem/router/pc, they are no help.
So, my question becomes, how the heck do I configure the SRX to use a higher TTL value when acting as a DHCP client? i'm not doing relay or anything of the sort.
If this is not currently possible, how do I get it added as an option under the interface dhcp config?