仅通过一个特定的 ubuntu 实例/设备，与 Samba 共享的连接就会失败 — — 任何我可以检查的想法都将受到热烈欢迎。
sudo dmesg:
[ 1214.845174] CIFS: Attempting to mount \\server\share
[ 1214.983692] CIFS: VFS: \\server failed to connect to IPC (rc=-13)
[ 1214.983709] CIFS: VFS: session 00000000baa945de has no tcon available for a dfs referral request
[ 1215.014863] CIFS: VFS: cifs_mount failed w/return code = -107
之前可以安装共享，但在系统发生未知更改后停止工作。为了解决这个问题，我从 22.04 LTS 升级到了 23.04 - 不幸的是问题仍然存在。其他设备仍然可以连接到共享。
示例挂载命令（fstab 之前已配置并运行良好）导致上述错误：
sudo mount -t cifs -o vers=3.0,username=user,password=secret //server/share /mnt/mountpoint/
我检查了 iptables - 似乎没有定义阻止 udp 的规则：
sudo iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Apparmor 似乎也没有阻止任何东西：
sudo apparmor_status
apparmor module is loaded.
84 profiles are loaded.
82 profiles are in enforce mode.
/snap/snapd/19993/usr/lib/snapd/snap-confine
/snap/snapd/19993/usr/lib/snapd/snap-confine//mount-namespace-capture-helper
/snap/snapd/20092/usr/lib/snapd/snap-confine
/snap/snapd/20092/usr/lib/snapd/snap-confine//mount-namespace-capture-helper
/usr/bin/evince
/usr/bin/evince-previewer
/usr/bin/evince-previewer//sanitized_helper
/usr/bin/evince-thumbnailer
/usr/bin/evince//sanitized_helper
/usr/bin/evince//snap_browsers
/usr/bin/man
/usr/lib/NetworkManager/nm-dhcp-client.action
/usr/lib/NetworkManager/nm-dhcp-helper
/usr/lib/connman/scripts/dhclient-script
/usr/lib/cups/backend/cups-pdf
/usr/lib/snapd/snap-confine
/usr/lib/snapd/snap-confine//mount-namespace-capture-helper
/usr/sbin/cups-browsed
/usr/sbin/cupsd
/usr/sbin/cupsd//third_party
/{,usr/}sbin/dhclient
libreoffice-senddoc
libreoffice-soffice//gpg
libreoffice-xpdfimport
lsb_release
man_filter
man_groff
nvidia_modprobe
nvidia_modprobe//kmod
rsyslogd
snap-update-ns.chromium
snap-update-ns.cups
snap-update-ns.firefox
snap-update-ns.fwupd
snap-update-ns.snap-store
snap-update-ns.snapd-desktop-integration
snap.chromium.chromedriver
snap.chromium.chromium
snap.chromium.hook.configure
snap.cups.accept
snap.cups.cancel
snap.cups.cups-browsed
snap.cups.cupsaccept
snap.cups.cupsctl
snap.cups.cupsd
snap.cups.cupsdisable
snap.cups.cupsenable
snap.cups.cupsfilter
snap.cups.cupsreject
snap.cups.cupstestppd
snap.cups.driverless
snap.cups.gs
snap.cups.ippeveprinter
snap.cups.ippfind
snap.cups.ipptool
snap.cups.lp
snap.cups.lpadmin
snap.cups.lpc
snap.cups.lpinfo
snap.cups.lpoptions
snap.cups.lpq
snap.cups.lpr
snap.cups.lprm
snap.cups.lpstat
snap.cups.reject
snap.firefox.firefox
snap.firefox.geckodriver
snap.firefox.hook.configure
snap.firefox.hook.connect-plug-host-hunspell
snap.firefox.hook.disconnect-plug-host-hunspell
snap.firefox.hook.post-refresh
snap.fwupd.dbxtool
snap.fwupd.fwupd
snap.fwupd.fwupdmgr
snap.fwupd.fwupdtool
snap.snap-store.hook.configure
snap.snap-store.snap-store
snap.snap-store.ubuntu-software
snap.snap-store.ubuntu-software-local-file
snap.snapd-desktop-integration.hook.configure
snap.snapd-desktop-integration.snapd-desktop-integration
tcpdump
2 profiles are in complain mode.
libreoffice-oosplash
libreoffice-soffice
0 profiles are in kill mode.
0 profiles are in unconfined mode.
27 processes have profiles defined.
27 processes are in enforce mode.
/usr/sbin/cups-browsed (5965)
/usr/sbin/cupsd (4108)
/usr/lib/cups/notifier/dbus (4277) /usr/sbin/cupsd
/usr/lib/cups/notifier/dbus (4278) /usr/sbin/cupsd
/usr/lib/cups/notifier/dbus (4279) /usr/sbin/cupsd
/usr/lib/cups/notifier/dbus (4280) /usr/sbin/cupsd
/usr/lib/cups/notifier/dbus (4281) /usr/sbin/cupsd
/usr/sbin/rsyslogd (3970) rsyslogd
/usr/bin/dash (4113) snap.cups.cups-browsed
/usr/bin/dash (5648) snap.cups.cups-browsed
/usr/bin/sleep (5649) snap.cups.cups-browsed
/usr/bin/dash (4115) snap.cups.cupsd
/snap/cups/980/sbin/cupsd (5232) snap.cups.cupsd
/snap/cups/980/sbin/cups-proxyd (5233) snap.cups.cupsd
/snap/firefox/3131/usr/lib/firefox/firefox (11307) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (11682) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (11702) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (11858) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (12031) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (12323) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (15814) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (17439) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (17601) snap.firefox.firefox
/snap/firefox/3131/usr/lib/firefox/firefox (17801) snap.firefox.firefox
/snap/snap-store/959/usr/bin/snap-store (7739) snap.snap-store.ubuntu-software
/snap/snapd-desktop-integration/83/usr/bin/snapd-desktop-integration (7984) snap.snapd-desktop-integration.snapd-desktop-integration
/snap/snapd-desktop-integration/83/usr/bin/snapd-desktop-integration (8126) snap.snapd-desktop-integration.snapd-desktop-integration
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.
0 processes are in mixed mode.
0 processes are in kill mode.
谢谢您的任何意见或想法。我想避免再次设置系统。
答案1
所有功劳归于 Morbius1：在 mount 命令中添加以下选项解决了该问题：
nodfs
安装再次正常工作！