New answers tagged

2

As a potential alternative to that, if you have some kind of connection to AWS from where you’re currently using your ARIN-assigned block, such as via a site-to-site tunnel or Direct Connect circuit, you could use one of your available ARIN IP addresses and NAT it to one of the AWS hosts’ private IP addresses rather than having a public IP address assigned ...


2

AWS does support Bring Your Own IP. You need to establish authority over the address space using RPKI to do it. Once you've done so, you can complete the remaining steps using the AWS CLI / API.


0

To expand on @Zac67... RFC791 is pointing out fragmentation can happen at layer-2 or layer-1. Such fragmentation (and reassembly) would be invisible to any higher layer protocols. This is an important distinction as the IP "DF" (do-not-fragment) flag does not apply to other layers. Such fragmentation is rare. For example, MLPPP (multi-link PPP) can ...


2

If two devices use the same MAC address they won't function correctly on a LAN. Similar issues could happen with Bluetooth and other technologies which depend on the uniqueness guarantee of MAC addresses. IEEE previously allocated OUI addresses in a sequential manner. Some manufacturers simply stopped paying for allocations, and began squatting on blocks ...


3

The original owner of the OUI or IEEE might take legal actions against you.


2

Re RFC 791: it's the fragmentation, transmission and reassembly that may be invisible to a node's IP stack, not the local network itself. That internet protocol module is usually called IP stack today. It's the functionality that enables connectivity to a local network. Back in 1981 it was entirely external to the system being networked. For a long time now (...


0

MAC learning on the switch happens 'instantly' - as soon as the first frame is received by the switch. I don't think that is a problem, especially since multiple MAC addresses on a single port are no problem generally. But: any device trying to send to the duplicate IP address is likely to have the previous MAC in its ARP cache though - make sure you delete ...


Top 50 recent answers are included