Don't fall over if the channel doesn't have a disconnect method.
tree258fff87b9f074da2f8aec08362e2c27afce1935
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-rw-r--r-- 18162 Changes-2.3
-rw-r--r-- 25906 FAQ
drwxr-xr-x - NeXT
-rw-r--r-- 11757 PLUGINS
-rw-r--r-- 7867 README
-rw-r--r-- 3461 README.MPPE
-rw-r--r-- 8353 README.MSCHAP80
-rw-r--r-- 2421 README.MSCHAP81
-rw-r--r-- 1940 README.NeXT
-rw-r--r-- 4093 README.aix4
-rw-r--r-- 4266 README.bsd
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-rw-r--r-- 6324 README.eap-srp
-rw-r--r-- 11918 README.linux
-rw-r--r-- 5488 README.osf
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-rw-r--r-- 10261 README.sol2
-rw-r--r-- 2124 README.sunos4
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-rw-r--r-- 4208 SETUP
-rw-r--r-- 490 TODO
drwxr-xr-x - aix4
drwxr-xr-x - chat
drwxr-xr-x - common
-rwxr-xr-x 5081 configure
drwxr-xr-x - etc.ppp
drwxr-xr-x - freebsd-2.0
drwxr-xr-x - freebsd-2.2.8
drwxr-xr-x - freebsd-3.0
drwxr-xr-x - include
drwxr-xr-x - linux
drwxr-xr-x - modules
drwxr-xr-x - netbsd-1.1
drwxr-xr-x - netbsd-1.2
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-rw-r--r-- 24294 ppp.texi
drwxr-xr-x - pppd
drwxr-xr-x - pppdump
drwxr-xr-x - pppstats
drwxr-xr-x - scripts
drwxr-xr-x - solaris
drwxr-xr-x - sunos4
drwxr-xr-x - svr4
drwxr-xr-x - ultrix