IPSEC_STRERROR 3
ipsec_strerror error messages for the IPsec policy manipulation library

    #include <netinet6/ipsec.h>

const char *`ipsec_strerror`

## DESCRIPTION

#include <netinet6/ipsec.h> declares

extern int ipsec_errcode;

which is used to pass an error code from IPsec policy manipulation library to a user program. The ipsec_strerror(); function can be used to obtain the error message string for the error code.

The array pointed to is not to be modified by the program. Since ipsec_strerror(); uses strerror 3 as an underlying function, calling strerror 3 after ipsec_strerror(); would overwrite the the return value from ipsec_strerror(); and make it invalid.

## RETURN VALUES

The ipsec_strerror(); function always returns a pointer to C string. The C string must not be overwritten by the caller.

## SEE ALSO

ipsec_set_policy 3

## HISTORY

The ipsec_strerror(); function first appeared in WIDE/KAME IPv6 protocol stack kit.

## BUGS

The ipsec_strerror(); function will return its result which may be overwritten by subsequent calls.

`ipsec_errcode` is not thread safe.