Are udp packets with non-routeable ip addresses valid on public network?

[Terje Elde]

On 12. okt. 2015, at 15:06, Ernie Luzar <luzar722 at gmail.com> wrote:

> I am receiving unsolicited inbound udp packets with a "to ip address" [10.0.10.1] of a computer on my LAN. Is this valid?

It shouldn't be routes over the internet to you, but it's pretty common to use between your ISP and yourself, for things like DHCP. What are the port-numbers? 67/68 or thereabout?

Terje