.TH IP 2X
.SH NAME
eipconv, parseip, parseether, myipaddr, myetheraddr, maskip, etherip, equivip \- Internet protocol
.SH SYNOPSIS
.B #include <ip.h>
.PP
.B
int	eipconv(void *o, int f1, int f2, int f3, int chr)
.PP
.B
int	parseip(uchar *ipaddr, char *str)
.PP
.B
int	parseether(uchar *eaddr, char *str)
.PP
.B
int	myipaddr(uchar *ipaddr, char *net)
.PP
.B
int	myetheraddr(uchar *eaddr, char *net)
.PP
.B
void	maskip(uchar *from, uchar *mask, uchar *to)
.PP
.B
int	equivip(uchar *ipaddr1, uchar *ipaddr2)
.SH DESCRIPTION
These routines are used by Internet Protocol (IP) programs to
manipulate IP and Ethernet addresses.
IP addresses are stored as a string of 4
.B unsigned
.BR chars ,
Ethernet
addresses as 6
.B unsigned
.BR chars .
The string representation of IP addresses is (up to) 4 decimal
integers from 0 to 255
separated by periods.
The string representation of Ethernet addresses is exactly
12 hexadecimal digits.
.PP
.I Eipconv
is a
.IR print (2)
formatter for Ethernet (verb
.BR I )
and Internet protocol (verb
.BR E )
addresses.
.PP
.I Parseip
converts a string pointed to by
.I str
to a 4-byte IP address starting at
.I ipaddr.
.I Myipaddr
reads the IP address string from file
.BI / net /1/local
and parses it into
.IR ipaddr .
Both routines return a negative number on errors.
.PP
.I Parseether
converts a string pointed to by
.I str
to a 6 byte Ethernet address starting at
.I eaddr.
.I Myetheraddr
reads the Ethernet address string from file
.IB net /1/stats
and parses it into
.IR eaddr .
Both routines return a negative number on errors.
.PP
.I Maskip
places the bit-wise AND of the IP addresses pointed
to by its first two arguments into the buffer pointed
to by the third.
.PP
.I Equivip
returns non-zero if the IP addresses pointed to by its two
arguments are equal.
.SH SEE ALSO
.IR print (2)