What does errno 78 (EREMCHG) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: a legacy remote endpoint changed address after the resource was known.

Could be also:
Constant	Type	OS
ENOSYS	errno	Mac
ENAMETOOLONG	errno	Solaris
PFN_LIST_CORRUPT	BugCheck Code	Windows

Previous	Next
EBADMSG	ENOSYS

EREMCHG

EREMCHG means “Remote address changed”. It is a legacy Linux errno useful for remote or distributed subsystems that track an endpoint identity and then discover that the address no longer matches the previously known resource.

Do not diagnose it as a simple connect failure. Preserve the remote identity, cached address, refreshed address, mount/session lifetime, and any name-service or service-discovery events around the change.

Distinguish from

ECONNRESET: an existing connection was reset.
EHOSTUNREACH: the host cannot be reached through routing.
ESTALE: a remote file handle no longer identifies a valid object.
ENOTUNIQ: a name is not unique in the relevant network scope.

Linux errno(3) · Linux UAPI errno definitions

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