@@ -520,25 +520,25 @@ client.connect(41234, 'localhost', (err) => { |
520 | 520 |
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521 | 521 | #### Note about UDP datagram size |
522 | 522 |
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523 | | -The maximum size of an `IPv4/v6` datagram depends on the `MTU` |
524 | | -(_Maximum Transmission Unit_) and on the `Payload Length` field size. |
| 523 | +The maximum size of an IPv4/v6 datagram depends on the `MTU` |
| 524 | +(Maximum Transmission Unit) and on the `Payload Length` field size. |
525 | 525 |
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526 | | -* The `Payload Length` field is `16 bits` wide, which means that a normal |
527 | | - payload cannot exceed 64K octets _including_ the internet header and data |
| 526 | +* The `Payload Length` field is 16 bits wide, which means that a normal |
| 527 | + payload cannot exceed 64K octets including the internet header and data |
528 | 528 | (65,507 bytes = 65,535 − 8 bytes UDP header − 20 bytes IP header); |
529 | 529 | this is generally true for loopback interfaces, but such long datagram |
530 | 530 | messages are impractical for most hosts and networks. |
531 | 531 |
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532 | 532 | * The `MTU` is the largest size a given link layer technology can support for |
533 | | - datagram messages. For any link, `IPv4` mandates a minimum `MTU` of `68` |
534 | | - octets, while the recommended `MTU` for IPv4 is `576` (typically recommended |
| 533 | + datagram messages. For any link, IPv4 mandates a minimum `MTU` of 68 |
| 534 | + octets, while the recommended `MTU` for IPv4 is 576 (typically recommended |
535 | 535 | as the `MTU` for dial-up type applications), whether they arrive whole or in |
536 | 536 | fragments. |
537 | 537 |
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538 | | - For `IPv6`, the minimum `MTU` is `1280` octets, however, the mandatory minimum |
539 | | - fragment reassembly buffer size is `1500` octets. The value of `68` octets is |
| 538 | + For IPv6, the minimum `MTU` is 1280 octets. However, the mandatory minimum |
| 539 | + fragment reassembly buffer size is 1500 octets. The value of 68 octets is |
540 | 540 | very small, since most current link layer technologies, like Ethernet, have a |
541 | | - minimum `MTU` of `1500`. |
| 541 | + minimum `MTU` of 1500. |
542 | 542 |
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543 | 543 | It is impossible to know in advance the MTU of each link through which |
544 | 544 | a packet might travel. Sending a datagram greater than the receiver `MTU` will |
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