19603 is the OpenWRT issue (would have linked to bug but forum won't let me link).
I fixed it by logging into my Comcast device (the bug is correct, this is not a openwrt issue!).
In there is a device guard and parental controls area. The change of MAC address from going to OpenWRT from Netgear put my device in MAC jail.
I discuss on reddit but can't post a link and the screenshot of the area in the Comcast router (10.0.0.1 in my case) looks like this now (working)
(i can't post a URL to imgur either...)
Not working shows my OpenWRT router in the "blocked" area.
HTHs someone.
(Last edited by jeffstokes1972 on 17 Oct 2016, 15:09)