I'll try it in a ports build.

On 2024/10/11 19:18, Jonathan Gray wrote:
> unused since "rewrite to merge arp and routing tables"
> in CSRG if_ether.c 7.14 (Berkeley) 06/25/91
> 
> not used in pppd as the #if RTM_VERSION >= 3, path is taken
> 
> Index: sys/net/if_arp.h
> ===================================================================
> RCS file: /cvs/src/sys/net/if_arp.h,v
> diff -u -p -r1.7 if_arp.h
> --- sys/net/if_arp.h	24 Jan 2017 10:08:30 -0000	1.7
> +++ sys/net/if_arp.h	11 Oct 2024 07:20:19 -0000
> @@ -71,19 +71,4 @@ struct	arphdr {
>  	u_int8_t  ar_tpa[];	/* target protocol address */
>  #endif
>  };
> -
> -/*
> - * ARP ioctl request
> - */
> -struct arpreq {
> -	struct	sockaddr arp_pa;		/* protocol address */
> -	struct	sockaddr arp_ha;		/* hardware address */
> -	int	arp_flags;			/* flags */
> -};
> -/*  arp_flags and at_flags field values */
> -#define	ATF_INUSE	0x01	/* entry in use */
> -#define ATF_COM		0x02	/* completed entry (enaddr valid) */
> -#define	ATF_PERM	0x04	/* permanent entry */
> -#define	ATF_PUBL	0x08	/* publish entry (respond for other host) */
> -#define	ATF_USETRAILERS	0x10	/* has requested trailers */
>  #endif /* _NET_IF_ARP_H_ */
>