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Maximum value for ‐s (size)
Petr Vorel edited this page Aug 16, 2024
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25 revisions
| Project version | Commit | Bug | Max -s value for 127.0.0.1
|
Max -s value for ::1
|
Note |
|---|---|---|---|---|---|
| Busybox (probably) >= 1.4.0 | 4a5cf16a3 | 65535 | 65535 | ||
| fping >= 2.4b2_to-ipv6 | 65488 | 65488 | Expects IP header 40 bytes and max IP packet 65536 bytes | ||
| iputils s20100418 | 6fcbb46 ("ping6: do not allow too large packet size by -s option.") | https://bugs.debian.org/166845 | 65528 | 127992 | |
| iputils s20150815 | 25aaaf4 ("Allow ping to use IPv6 addresses") | gh#5 | 127992 | 127992 | Unified max value |
| iputils s20200821 | a647e2c ("ping: allow any package size to be defined by user") | gh#210 | INT_MAX (2147483647) |
INT_MAX (2147483647) |
|
| inetutils | 65399 | 65527 | |||
Real max. -s working value (Linux) |
- | Linux kernel 6.9 | 65507 | 65527 | |
Real max. -s working value (FreeBSD) |
- | FreeBSD 14.1 | 65507 | 9208 (theoretically 131024) |
| Protocol | Maximum size (bytes) |
|---|---|
| Max. IPv4 packet size | 65535 |
| Max. IPv4 payload | 65515-65475 (depending on header size: 20-60 bytes) |
| Max. IPv6 packet size | 65575 |
| Max. IPv6 payload | 65535 (header size: 40 bytes) |
| Max. ICMP payload | 65507 = 65535 (IPv4 packet size) - 20 (min IPv4 header size) - 8 (ICMP header size) |
| Max. ICMPv6 payload | 65527 = 65535 (IPv6 packet size) - 8 (ICMPv6 header size) |
Drove my attention due: https://github.com/iputils/iputils/issues/542