Can't connect ot Smaba - parse_dfs_path_strict

Hi

I'm trying to setup a samba drive on an SSD attached through usb to my router (WRT32x running 23.05.2, hostname=main). The ssd is mounted, and I can view the files on it when connected through ssh. When I click on the smb share from the file manager on my desktop (ubuntu 22.04) and enter my user and password I can't connect, and get the following error in the rotuer System Log:

Mon Feb 26 15:25:13 2024 daemon.err smbd[11333]: [2024/02/26 15:25:13.858224,  0] ../../source3/smbd/msdfs.c:158(parse_dfs_path_strict)
Mon Feb 26 15:25:13 2024 daemon.err smbd[11333]:   parse_dfs_path_strict: Hostname main.local is not ours.

I'm able to ping and run nslookup on main (my router's hostname) from my desktop.

I think I have the user setup correctly to access the ssd:

root@main:~# cat /etc/passwd | grep smbuser
smbuser:x:1001:1001:smbuser:/dev/null:/bin/false

root@main:/mnt/sda/samba_backup# ls -lt
drwxrwxrwx  145 smbuser  smbuser      12288 Feb 22 02:00 nextcloud_backup
drwxrwxrwx    7 smbuser  smbuser       4096 Feb 13 03:00 immich

/etc/config/samba4

config samba
	option workgroup 'WORKGROUP'
	option charset 'UTF-8'
	option description 'Samba on OpenWRT'
	option interface 'lan'

config sambashare
	option name 'smbshare'
	option path '/mnt/sda/samba_backup'
	option read_only 'no'
	option users 'smbuser'
	option guest_ok 'no'
	option create_mask '0666'
	option dir_mask '0777'

I have samba4-libs, samba4-server, and luci-app-samba4 installed on my router.

/etc/samba/smb.conf (symlink to /var/etc/smb.conf)

[global]
	netbios name = main 
	interfaces = br-lan 
	server string = Samba on OpenWRT
	unix charset = UTF-8
	workgroup = WORKGROUP

	## This global parameter allows the Samba admin to limit what interfaces on a machine will serve SMB requests.
	bind interfaces only = yes

	## time for inactive connections to-be closed in minutes
	deadtime = 15

	## disable core dumps
	enable core files = no

	## set security (auto, user, domain, ads)
	security = user

	## This parameter controls whether a remote client is allowed or required to use SMB encryption.
	## It has different effects depending on whether the connection uses SMB1 or SMB2 and newer:
    ## If the connection uses SMB1, then this option controls the use of a Samba-specific extension to the SMB protocol introduced in Samba 3.2 that makes use of the Unix extensions.
	## If the connection uses SMB2 or newer, then this option controls the use of the SMB-level encryption that is supported in SMB version 3.0 and above and available in Windows 8 and newer. 
	## (default/auto,desired,required,off)
	#smb encrypt = default

	## set invalid users
	invalid users = root

	## map unknow users to guest
	map to guest = Bad User

	## allow client access to accounts that have null passwords. 
	null passwords = yes

	## The old plaintext passdb backend. Some Samba features will not work if this passdb backend is used. (NOTE: enabled for size reasons)
	## (tdbsam,smbpasswd,ldapsam)
	passdb backend = smbpasswd

	## Set location of smbpasswd ('smbd -b' will show default compiled location)
	#smb passwd file = /etc/samba/smbpasswd 

	## LAN (IPTOS_LOWDELAY TCP_NODELAY) WAN (IPTOS_THROUGHPUT) WiFi (SO_KEEPALIVE) try&error for buffer sizes (SO_RCVBUF=65536 SO_SNDBUF=65536)
	socket options = IPTOS_LOWDELAY TCP_NODELAY

	## If this integer parameter is set to a non-zero value, Samba will read from files asynchronously when the request size is bigger than this value.
	## Note that it happens only for non-chained and non-chaining reads and when not using write cache.
	## The only reasonable values for this parameter are 0 (no async I/O) and 1 (always do async I/O).
	## (1/0)
	#aio read size = 0
	#aio write size = 0
	## If Samba has been built with asynchronous I/O support, Samba will not wait until write requests are finished before returning the result to the client for files listed in this parameter.
	## Instead, Samba will immediately return that the write request has been finished successfully, no matter if the operation will succeed or not.
	## This might speed up clients without aio support, but is really dangerous, because data could be lost and files could be damaged. 
	#aio write behind = /*.tmp/

	## lower CPU useage if supported and aio is disabled (aio read size = 0 ; aio write size = 0)
	## is this still broken? issue is from 2019 (NOTE: see https://bugzilla.samba.org/show_bug.cgi?id=14095 )
	## (no, yes)
	#use sendfile = yes

	## samba will behave as previous versions of Samba would and will fail the lock request immediately if the lock range cannot be obtained.
	#blocking locks = No

	## disable loading of all printcap printers by default (iprint, cups, lpstat)
	load printers = No
	printcap name = /dev/null

	## Enabling this parameter will disable Samba's support for the SPOOLSS set of MS-RPC's.
	disable spoolss = yes

	## This parameters controls how printer status information is interpreted on your system.
	## (BSD, AIX, LPRNG, PLP, SYSV, HPUX, QNX, SOFTQ)
	printing = bsd

	## Disable that nmbd is acting as a WINS server for unknow netbios names
	#dns proxy = No

	## win/unix user mapping backend
	#idmap config * : backend = tdb

	## Allows the server name that is advertised through MDNS to be set to the hostname rather than the Samba NETBIOS name.
	## This allows an administrator to make Samba registered MDNS records match the case of the hostname rather than being in all capitals.
	## (netbios, mdns)
	mdns name = mdns

	## Clients that only support netbios won't be able to see your samba server when netbios support is disabled.
	#disable netbios = Yes

	## Setting this value to no will cause nmbd never to become a local master browser.
	#local master = no

	## (auto, yes) If this is set to yes, on startup, nmbd will force an election, and it will have a slight advantage in winning the election. It is recommended that this parameter is used in conjunction with domain master = yes, so that nmbd can guarantee becoming a do
main master. 
	#preferred master = yes

	## (445 139) Specifies which ports the server should listen on for SMB traffic.
	## 139 is netbios/nmbd
	#smb ports = 445 139

	## This is a list of files and directories that are neither visible nor accessible.
	## Each entry in the list must be separated by a '/', which allows spaces to be included in the entry. '*' and '?' can be used to specify multiple files or directories as in DOS wildcards.
	veto files = /Thumbs.db/.DS_Store/._.DS_Store/.apdisk/
:

	## If a directory that is to be deleted contains nothing but veto files this deletion will fail unless you also set the delete veto files parameter to yes.
	delete veto files = yes

################ Filesystem and creation rules ################
	## reported filesystem type (NTFS,Samba,FAT)
	#fstype = FAT

	## Allows a user who has write access to the file (by whatever means, including an ACL permission) to modify the permissions (including ACL) on it.
	#dos filemode = Yes

	## file/dir creating rules
	#create mask = 0666
	#directory mask = 0777
	#force group = root
	#force user = root
	#inherit owner = windows and unix
################################################################

######### Dynamic written config options #########

[smbshare]
	path = /mnt/sda/samba_backup
	valid users = smbuser
	create mask = 0666
	directory mask = 0777
	read only = no
	guest ok = no

Any ideas what's wrong?