…mit themselves to more conservative IPv4 datagram sizes such as 576 bytes; per [RFC0791], the absolute minimum value of the IP MTU for IPv4 is as low as 68 bytes, which would leave only 40 bytes minus security overhead for a UDP payload. Implementations extremely focused on this …

…-------------+ | Address Block | 0.0.0.0/8 | | Name | "This network" | | RFC | [RFC0791], Section 3.2 | | Allocation Date | September 1981 | | Termination Date | N/A | | Source | True | | Destination | False | | Forwardable | False | | Global | False | | Reserved-by-Protocol | Tr…

…-------------+ | Address Block | 0.0.0.0/8 | | Name | "This network" | | RFC | [RFC0791], Section 3.2 | | Allocation Date | September 1981 | | Termination Date | N/A | | Source | True | | Destination | False | | Forwardable | False | | Global | False | | Reserved-by-Protocol | Tr…