Posted: Thu Jan 15, 2026 8:54 Post subject: New Build - 01/14/2026 - r63355
Welcome to Broadcom r63355 beta release thread for reporting, feedback to developers & community benefit.
Please do not flash builds until installation is understood, risks involved and device specificrecovery methods.
Avoid discussions, create threads for questions, general problems or use search; this thread is not for support.
List router model & version or revision, operating & wireless modes & exact filename/firmware image flashed.
CLI Flash: 'cd /tmp' then 'wget {file URL}' (httponly) or 'curl -O {file URL}' (http, https, ftp) 'write {file} linux' then 'reboot'.
Issues, observations, and/or workarounds reported:
• WebUI: Clear history or use a portable. Temporary cache bypass: Ctrl+F5, Cmd+Shift+R or new private window/incognito.
• Please report findings with steps needed to reproduce, configuration, clients, output, logs and important information below!
Important:
• Detail issues & relevant configs, logs: syslog klog 'dmesg' 'cat /tmp/var/log/messages' nvram set console_debug=1, serial.
• Firewall NAT: 'iptables -vnL' 'iptables -t nat -vnL' 'iptables -t mangle -vnL' & 'cat /tmp/.ipt'. Debug Analyze: stracetcpdump.
• Gremlins: reboot. cold boot. Reset & reconfigure not restore backup. Search Trac & discuss in forum before opening tickets.
• Include operating & wireless modes (e.g. Gateway, Router, AP, SB, WDS, Mesh) and applicable configurations to reproduce.
Joined: 10 Apr 2008 Posts: 105 Location: Chinese Mainland
Posted: Thu Jan 15, 2026 10:27 Post subject:
Router/Version: R7000
File/Kernel: Linux version 4.4.302-rt232-st71
Previous/Reset: 63123/ Restore backup from 63123.
Mode/Status: Working
Issues/Errors: Client can't get IPv6 from Router.
From versions after 63123, I noticed that the router no longer assigns IPv6 addresses to clients, even though the router itself has successfully obtained an IPv6 address from the telecom ISP.
This issue has persisted up to the current 63355 version.
Here are a screenshot of the client’s `ipconfig` output and the router’s `dmesg` logs. If any additional information is needed, please feel free to ask.
@Newbrain: I presume that you added that to startup. The issue was discussed in the Atheros thread, and I came to the same conclusion about the problem. The issue for WAP DNS issues should be fixed in the next release:
Joined: 16 Mar 2019 Posts: 422 Location: Szczecin, Poland EU
Posted: Thu Jan 15, 2026 13:28 Post subject:
Router: Linksys EA6400
Kernel: Linux 4.4.302-rt232-st71 #14912 SMP Wed Jan 14 15:03:36 +07 2026 armv7l
Previous: original r63295 build
Mode: Internet Gateway, WIFI 5GHz AP, smartdns with DoH, iptables firewall, SshD
Status: Working
Issues: Nothing significant, some yellow marked events in logs
Uptime: almost 13h
All services on device working rather good. Performance is OK.
On previously versions Smartdns wasn't stable. That was stack overflow problem and DNS service stop working. After fix 63339 everything should be OK. My device had this issue too and now after flash the newest build router is rather stable.
Posted: Thu Jan 15, 2026 18:29 Post subject: AC87U
Router/Version: Asus RT-AC87U R
Update method: WebUpgrade
File/Kernel: asus_rt-ac87u-firmware.trx_r63355 std / Linux 4.4.302-rt232-st71 #14920 SMP Wed Jan 14 16:00:07 +07 2026 armv7l
Previous/Reset: 63295 / no
Mode/Status: Gateway, Open VPN Client / Up and running for 1:58 hours
CPU Temperature: CPU 76.3 °C / WL0 46.7 °C / WL1 0.0 °C (ambient temperature 20.1 °C)
Issues/Errors: Nothing significant
As always, the Quantenna chip has its own quirks. This is a closed source chipset
There is no way to install a channel.
But you can disable 5.0 GHz. @mpgalaxy hack "If you set the radio mode to station bridge and disable the network mode, the 5GHz device will turn off completely even after reboot."
If your router's light turns red, don't worry. Internet connection is ok.
Thank you BS and gurus! _________________ Atheros
Netgear XR500 Nighthawk - DD-WRT 63257
Tp-Link TL-WDR4900 v1.3 - DD-WRT 53133
TP-Link WR1043ND v4 - DD-WRT 51838
TP-Link WR1043ND v2 - Gargoyle OS 1.13.0
TP-Link WR841ND v11 - DD-WRT 63257
Broadcom
Asus RT-AC88U - DD-WRT 63257
Asus RT-AC87U R - DD-WRT 63257
Asus RT-N66U - DD-WRT 63257
Linksys WRT54GL v1.1 - DD-WRT 54517M
Linksys WRT54GL v1.1 - FreshTomato 2023.4_MIPS_K26
Linksys WRT54GL v1.1 - Gargoyle OS 1.6.2
Router/Version: TP-Link Archer C9 v3
Update method: WebUpgrade
File/Kernel: Linux 4.4.302-rt232-st71 #14914 SMP Wed Jan 14 15:23:54 +07 2026 armv7l
Previous/Reset: 63223 / No
Mode/Status: Gateway, SmartDNS, DDNS, WireGuard Server, Samba, FTP / Up and running for 1:58 hours
CPU Temperature: CPU 69.1 °C / WL0 49.0 °C / WL1 51.2 °C / (ambient temperature 19 °C)
Issues/Errors: Nothing significant
Keeping an eye on SmartDNS as prior version 6**** working ROM releases 61848, 63020, 63223 would stop resolving at random intervals. Workaround is to restart the service every minute with a CRON job. */1 * * * * root service smartdns restart
Router/Version: Asus RT-N18U/Rev. A1
File/Kernel: DD-WRT v3.0-r63355 std (01/14/26
Previous/Reset: DD-WRT v3.0-r63230 std (01/01/26)/No
Mode/Status: Gateway/IPv6 is not working properly.
Configuration
Enable IPv6 : Enable
Type : DHCPv6 with Prefix Delegation
Prefix Length : 64
MTU : 1452
Router Advertisement Daemon (radvd) : Enable
As chenshaoju pointed out, the WAN IPv6 was fetched from the ISP, but the client side doesn't get it from the router.
My observation is that r63230 is the last working IPv6 build with radvd enabled.
Now, assuming that radvd is broken, instead of using radvd, having DHCPv6 Server Daemon enabled, and IPv6 Router Advertisement (RA) enabled, testing showed that IPv6 will work, but comes with one problem that, after I made a soft router reboot, IPv6 is crippled again.(edited)
To fix it, I have to click Save & Apply button on the IPv6 page. It seems like DHCPv6 Server Daemon option won't stick to it's "Enable" value. Apparently, of course.
Last edited by khayalan on Fri Jan 16, 2026 14:08; edited 2 times in total
Router/Version: Asus RT-N66U
Update method: WebUpgrade
File/Kernel: dd-wrt.v24-r63355_NEWD-2_K3.x-big-RT-N66U.trx / Linux 4.4.302-rt232-st71 #43182 Wed Jan 14 15:46:51 +07 2026 mips
Previous/Reset: 63295 / no
Mode/Status: Gateway, Open VPN Client / Up and running for 2:31 hours
CPU Temperature: WL0 46.0 °C (ambient temperature 20.0 °C)
Issues/Errors: Nothing significant
Thank you BS and gurus! _________________ Atheros
Netgear XR500 Nighthawk - DD-WRT 63257
Tp-Link TL-WDR4900 v1.3 - DD-WRT 53133
TP-Link WR1043ND v4 - DD-WRT 51838
TP-Link WR1043ND v2 - Gargoyle OS 1.13.0
TP-Link WR841ND v11 - DD-WRT 63257
Broadcom
Asus RT-AC88U - DD-WRT 63257
Asus RT-AC87U R - DD-WRT 63257
Asus RT-N66U - DD-WRT 63257
Linksys WRT54GL v1.1 - DD-WRT 54517M
Linksys WRT54GL v1.1 - FreshTomato 2023.4_MIPS_K26
Linksys WRT54GL v1.1 - Gargoyle OS 1.6.2
Posted: Sat Jan 17, 2026 18:01 Post subject: AC88U
Router/Version: Asus RT-AC88U
Update method: WebUpgrade
File/Kernel: asus_rt-ac88u-firmware.trx_r63355 std / Linux 4.4.302-rt232-st71 #14917 SMP Wed Jan 14 15:41:37 +07 2026 armv7l
Previous/Reset: r63295 / no
Mode/Status: Gateway, Open VPN Client / Up and running for 2:23 hours
CPU Temperature: CPU 77.1 °C / WL0 50.3 °C / WL1 48.3°C (ambient temperature 20.1 °C)
Issues/Errors: Nothing significant
If your router's light turns red, don't worry. Internet connection is ok.
Thank you BS and gurus! _________________ Atheros
Netgear XR500 Nighthawk - DD-WRT 63257
Tp-Link TL-WDR4900 v1.3 - DD-WRT 53133
TP-Link WR1043ND v4 - DD-WRT 51838
TP-Link WR1043ND v2 - Gargoyle OS 1.13.0
TP-Link WR841ND v11 - DD-WRT 63257
Broadcom
Asus RT-AC88U - DD-WRT 63257
Asus RT-AC87U R - DD-WRT 63257
Asus RT-N66U - DD-WRT 63257
Linksys WRT54GL v1.1 - DD-WRT 54517M
Linksys WRT54GL v1.1 - FreshTomato 2023.4_MIPS_K26
Linksys WRT54GL v1.1 - Gargoyle OS 1.6.2
