[neilv]

You can also do this with an old OpenWrt router, which also gets you a management interface and a gigabit Ethernet switch as part of the plastic box.

I used to have such a bridge (OpenWrt on Netgear WNDR3800 hardware) Velcro'd to the underside of a TV cart, so that an appliance on the cart that only had Ethernet and 2.4 GHz WiFi built-in could do a more reliable 5 GHz across the room.

[aurelian15]

I agree that this is a much better option. Also, if you use two OpenWrt devices, you can enable WDS mode to build a true layer 2 bridge. That is, you won't need Proxy ARP and DHCP relay. For example, DHCP and IPv6 will just work out of the box.

Edit: From what I can tell, support for WDS depends on the WiFi chipset. "iw list" must explicitly include "WDS" as a "supported interface mode". At least the Broadcom chipset on the Raspberry Pi Zero does not support this, but, for example, the Atheros chipsets used in a variety of routers do.

[mobilio]

I'm bridging for an IPTV box now TP-Link Archer C20i that cots me $10.

It also make 2nd AP connected wireless to first one for extending WiFi coverage. Not a perfect setup but works few months without issues.

[cuu508]

DD-WRT also supports this (wifi mode: "client")

[tyingq]

And probably also a much better antenna.