Cisco Anyconnect - M3 proc - Symbol  nftw(optver 20: nftw@GLIBC_2.3.3) not found
Installed Cisco Anyconnect in Debian virtual box, connection is working, but after connection there is standard default check for the new version and it failed:

Initializing the AnyConnect Downloader...
The AnyConnect Downloader is performing update checks...
  >> notice: The AnyConnect Downloader is performing update checks...
  >> notice: Checking for profile updates...
[BOX64] Error: PltResolver: Symbol  nftw(optver 20: nftw@GLIBC_2.3.3) not found, cannot apply R_X86_64_JUMP_SLOT 0x7fff0245d328 (0x7fff020b9bfe) in /opt/cisco/anyconnect/lib/libvpncommon.so (local_maplib=(nil), global maplib=0x64182ee0, deepbind=0)
  >> notice: Checking for product updates...
  >> notice: Checking for customization updates...
  >> notice: Performing any required updates...