Bug 263898 - SIOCGIFMTU not mentioned in netintro(4)
Summary: SIOCGIFMTU not mentioned in netintro(4)
Status: New
Alias: None
Product: Documentation
Classification: Unclassified
Component: Manual Pages (show other bugs)
Version: Latest
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-bugs (Nobody)
Depends on:
Reported: 2022-05-10 15:39 UTC by xyesbee
Modified: 2022-05-10 15:39 UTC (History)
1 user (show)

See Also:


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Description xyesbee 2022-05-10 15:39:04 UTC
netintro(4) does not mention a useful ioctl(), SIOCGIFMTU (Socket IO Channel Get Interface MTU). This is mentioned in OpenBSD's netintro(4) man page and Linux's netdevice(4) man page (man7.org).

FreeBSD's documentation is however in if_allmulti(9). It would've been better to put it there because knowing the MTU is useful.